Trying to make tycoon GUI, using local scripts and everything not working???

I'm making a tycoon and I had yet to realize that the leaderboard does not show on any mobile device. I've currently been trying this:

player = game.Players.LocalPlayer

function update()
script.Parent.Text = player.leaderstats.Cash.Value
end

player.leaderstats.Cash.Value.Changed:connect(update)

I put this in a text box, that's in a ScreenGui, that's in the StarterGui, but it does not work, even if I test it. For any extra details, I used Zednov's tycoon kit as my starting.