[Sharparam]

If your code is not performance critical, it may be easier to have a table of tables instead, something like:

local buffs = { -- Unsorted buffs table
    {1234, 25},
    {4321, 60}
}
 
for i, v in ipairs(buffs) do
    print(i, v[1], v[2])
end
 
--[[ Output:
1       1234    25
2       4321    60
]]
 
local function compare(a, b)
    return a[2] > b[2]
end
 
table.sort(buffs, compare)
 
for i, v in ipairs(buffs) do
    print(i, v[1], v[2])
end
 
--[[ Output:
1       4321    60
2       1234    25
]]
 
-- Now to find a specific buff ID and get the healing value, you could use something like:
 
local function getHealing(id)
    for _, v in ipairs(buffs) do
        if v[1] == id then return v[2] end
    end
    return nil -- Functions return nil by default, but whatever
end
 
local healing = getHealing(1234) -- Returns 25
healing = getHealing("this buff does not exist") -- Returns nil