[Fizzlemizz]

the <Script file="luascript.lua"/> goes in the XML file before you add any <Frame .. tags etc.

self:CreateList wont exists unless the frame has a Mixin defined in lua, most likely in luascript.lua

luascript.lua

BenalishListSomethingFrameMixin = {}
function BenalishListSomethingFrameMixin:CreateList(total)
	print(self:GetName(), "Let's create a list of", total, "Entries!")
end

XML

<Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/ ..\FrameXML\UI.xsd">
	<Script file="luascript.lua"/>
	<Frame name="BenalishListFrame", mixin="BenalishListSomethingFrameMixin", virtual="true">
		<Scripts>
			<OnLoad>
				self:CreateList(total)
				-- I don't know where total comes from? You might want to retrieve that in the CreateList function instead!
			</OnLoad>
		</Scripts>
	</Frame>
</Ui>