DataStore Script!

local DataStoreService = game:GetService("DataStoreService") -- Getting The Main Service
local Players = game:GetService("Players") -- Getting This Service For Connecting Events For A Player

local DataStore = DataStoreService:GetDataStore("1") -- If You Change This 1 To Another Number, All Data Will Be Reset

Players.PlayerAdded:Connect(function(player: Player) -- Using The PlayerAdded Event
    local data
    local success, errorMsg = pcall(function()
        DataStore:GetAsync(player.UserId.."-points") -- Retrieving The Player's Data With A Specific Key
    end)

    if success then
        data = player.leaderstats.Points.Value -- Setting Data To The Player's Points
    else
        print("There Was An Error Loading "..player.Name.." 'S Data!")
        wait(errorMsg)
    end
end)

Players.PlayerRemoving:Connect(function(player: Player) -- Using The PlayerRemoving Event
    local success, errorMsg = pcall(function()
        DataStore:SetAsync(player.UserId.."-points", player.leaderstats.Points.Value) -- Setting A Specific Key For This Stat
    end)

    if success == true then
        print(player.Name.." 'S Data Was Saved!") -- Printing If A Player's Data Was Saved Correctly
    else
        print("There Was An Error Saving "..player.Name.."'S Data!")
        warn(errorMsg)
    end
end)