How do I save leaderboard stats?

I am making a hide and seek game and I need to figure out how to save wins. Here is a basic leaderboard script I used.

    local function onPlayerJoin(player)

    	local leaderstats = Instance.new("Folder")
    	leaderstats.Name = "leaderstats"
    	leaderstats.Parent = player
     
    	local gold = Instance.new("IntValue")
    	gold.Name = "Gold"
    	gold.Value = 0
    	gold.Parent = leaderstats
     
    end
     
    game.Players.PlayerAdded:Connect(onPlayerJoin)

It only works for the session in-game, but when I leave it doesn't save.

Use datastore service, it's on wiki .