How do I get data from a player who clicks a TextButton?

I've been working on an inventory GUI and I want to change the stats of a player when they click this button. I've tried making my own code but it hasn't worked out so far. This is what I've tried

function click(player)
	
local stats = player:FindFirstChild("leaderstats")
if stats then
	
if stats ~= nil then
	 local cash = stats:findFirstChild("Genie")
end

script.Parent.Visible = false
script.Parent.Parent.Cancel.Visible = false

wait(0.1)
script.Parent.Parent.TextLabel.Text = "."
wait(0.3)
script.Parent.Parent.TextLabel.Text = ".."
wait(0.3)
script.Parent.Parent.TextLabel.Text = "..."
wait(0.3)
script.Parent.Parent.TextLabel.Text = "Purchase successful!  This item has been added to your inventory"
wait(3)	

print('item')

cash.Value = 1

script.Parent.Parent:TweenPosition(UDim2.new(0, 1500,0, 160), "Out", "Bounce")

end
end

script.Parent.MouseButton1Click:connect(click)