Is there a possible way to check the size of a data?

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9

If you are storing data in tables, you can use HttpService:JSONEncode()

local dataStore = game:GetService("DataStoreService")
local exampleData = dataStore:GetDataStore("exampleData")
local HTTP = game:GetService("HttpService")

local suc,dat = pcall(function()
    return exampleData:GetAsnyc("Key_Name")
end)

print(string.len(HTTP:JSONEncode(dat)))

I didn’t tested it, so I can’t totally say this is works.