[Sharpedge]

Welp, it is kinda working lol. I did use the GetPersonalRatedInfo. See the code below:

local CONQUEST_CURRENCY_ID = 1602
local HONOR_CURRENCY_ID = 1792

-- Main GUI Frame
local IncCallout = CreateFrame("Frame", "IncCalloutMainFrame", UIParent, "BackdropTemplate")
IncCallout:SetSize(225, 240)  
IncCallout:SetPoint("CENTER")
IncCallout:SetMovable(true)
IncCallout:EnableMouse(true)
IncCallout:RegisterForDrag("LeftButton")
IncCallout:SetScript("OnDragStart", IncCallout.StartMoving)
IncCallout:SetScript("OnDragStop", IncCallout.StopMovingOrSizing)

local closeButton = CreateFrame("Button", nil, IncCallout, "UIPanelCloseButton")
closeButton:SetPoint("TOPRIGHT", IncCallout, "TOPRIGHT", -5, -5)
closeButton:SetSize(24, 24)  
closeButton:SetScript("OnClick", function()
    IncCallout:Hide()  
end)

closeButton:SetScript("OnEnter", function(self)
    GameTooltip:SetOwner(self, "ANCHOR_RIGHT")
    GameTooltip:SetText("Close the Window", nil, nil, nil, nil, true)
    GameTooltip:Show()
end)
closeButton:SetScript("OnLeave", function()
    GameTooltip:Hide()
end)

-- Create the PVP Stats window frame
local pvpStatsFrame = CreateFrame("Frame", "PVPStatsFrame", UIParent, "BasicFrameTemplateWithInset")
pvpStatsFrame:SetSize(220, 200)
pvpStatsFrame:SetPoint("CENTER")
pvpStatsFrame:SetMovable(true)
pvpStatsFrame:EnableMouse(true)
pvpStatsFrame:RegisterForDrag("LeftButton")
pvpStatsFrame:SetScript("OnDragStart", pvpStatsFrame.StartMoving)
pvpStatsFrame:SetScript("OnDragStop", pvpStatsFrame.StopMovingOrSizing)
pvpStatsFrame:Hide()

pvpStatsFrame.title = pvpStatsFrame:CreateFontString(nil, "OVERLAY")
pvpStatsFrame.title:SetFontObject("GameFontHighlight")
pvpStatsFrame.title:SetPoint("TOP", pvpStatsFrame, "TOP", 0, -7)
pvpStatsFrame.title:SetText("PVP Stats")

local LEFT_MARGIN = -70
local VERTICAL_GAP = -15

local function createStatLabelAndValue(parent, labelText, previousElement, yOffset, textColor)
    local label = parent:CreateFontString(nil, "OVERLAY", "GameFontNormal")
    label:SetPoint("TOPLEFT", previousElement, "BOTTOMLEFT", previousElement == parent.title and LEFT_MARGIN or 0, yOffset)
    label:SetText(labelText)
    label:SetTextColor(unpack(textColor))
    
    local value = parent:CreateFontString(nil, "OVERLAY", "GameFontNormal")
    value:SetPoint("LEFT", label, "RIGHT", 5, 0)
    value:SetTextColor(1, 0.84, 0)
    return label, value
end

-- Creating labels and values with custom colors for each category
pvpStatsFrame.honorableKillsLabel, pvpStatsFrame.honorableKillsValue = createStatLabelAndValue(pvpStatsFrame, "Lifetime Honorable Kills:", pvpStatsFrame.title, VERTICAL_GAP, {0, 1, 0})  -- Green
pvpStatsFrame.conquestLabel, pvpStatsFrame.conquestValue = createStatLabelAndValue(pvpStatsFrame, "Conquest Points:", pvpStatsFrame.honorableKillsLabel, VERTICAL_GAP, {0, 0.75, 1})  -- Light blue
pvpStatsFrame.honorLabel, pvpStatsFrame.honorValue = createStatLabelAndValue(pvpStatsFrame, "Honor Points:", pvpStatsFrame.conquestLabel, VERTICAL_GAP, {1, 0.5, 0})  -- Orange
pvpStatsFrame.honorLevelLabel, pvpStatsFrame.honorLevelValue = createStatLabelAndValue(pvpStatsFrame, "Honor Level:", pvpStatsFrame.honorLabel, VERTICAL_GAP, {0.58, 0, 0.82})  -- Purple
pvpStatsFrame.conquestCapLabel, pvpStatsFrame.conquestCapValue = createStatLabelAndValue(pvpStatsFrame, "Conquest Cap:", pvpStatsFrame.honorLevelLabel, VERTICAL_GAP, {1, 0, 0})  -- Red
pvpStatsFrame.soloShuffleRatingLabel, pvpStatsFrame.soloShuffleRatingValue = createStatLabelAndValue(pvpStatsFrame, "Solo Shuffle Rating:", pvpStatsFrame.conquestCapLabel, VERTICAL_GAP, {1, 0.84, 0})  -- Gold color for value)

local SOLO_SHUFFLE_INDEX = 7  

local lastPlayerName = nil  

local function RefreshPvPStats()
    local conquestInfo = C_CurrencyInfo.GetCurrencyInfo(Constants.CurrencyConsts.CONQUEST_CURRENCY_ID)
    local weeklyProgress = C_WeeklyRewards.GetConquestWeeklyProgress()
    local honorInfo = C_CurrencyInfo.GetCurrencyInfo(HONOR_CURRENCY_ID)
    local lifetimeHonorableKills, _ = GetPVPLifetimeStats()
    local honorLevel = UnitHonorLevel("player")
    local currentConquestPoints = conquestInfo.quantity
    local conquestCap = weeklyProgress.maxProgress or 1350

    if conquestCap == 1250 then
        conquestCap = 1350
    end

    local rating = GetPersonalRatedInfo(SOLO_SHUFFLE_INDEX)
    local soloShuffleRating = rating or "N/A"

    pvpStatsFrame.honorableKillsValue:SetText(lifetimeHonorableKills)
    pvpStatsFrame.conquestValue:SetText(currentConquestPoints)
    pvpStatsFrame.conquestCapValue:SetText(currentConquestPoints .. " / " .. conquestCap)
    pvpStatsFrame.honorValue:SetText(honorInfo.quantity)
    pvpStatsFrame.honorLevelValue:SetText(honorLevel)
    pvpStatsFrame.soloShuffleRatingValue:SetText(soloShuffleRating)
end

pvpStatsFrame:RegisterEvent("PVP_RATED_STATS_UPDATE")
pvpStatsFrame:SetScript("OnEvent", function(self, event)
    if event == "PVP_RATED_STATS_UPDATE" then
        RefreshPvPStats()
    end
end)

pvpStatsFrame:RegisterEvent("PLAYER_LOGIN")
pvpStatsFrame:RegisterEvent("PLAYER_ENTERING_WORLD")
pvpStatsFrame:RegisterEvent("CURRENCY_DISPLAY_UPDATE")
pvpStatsFrame:RegisterEvent("WEEKLY_REWARDS_UPDATE")
pvpStatsFrame:SetScript("OnEvent", UpdatePvPStatsFrame)
pvpStatsFrame:SetScript("OnShow", RefreshPvPStats)  ]

So here is where I think I messed up or left out something. I can log in, click on the PVP Stat button on my GUI and it shows the Solo Shuffle Rating as 0. So then I go to Group Finder/Player vs Player, and leave that open. I then open the PVP Stat window again and it shows the correct rating. If I log out, and then into another toon it's the same senario.

I have just shown this part of my code. If needed I can post the entire thing. The changes are not on my Github. And it's like 1500 lines.I just think I'm missing something for it to have this type of behaviour.