Twitter Code GUI Not Giving Leaderstats?

So I have this srippt, and you enter a code into a text box and your supposed to get leaderstats from it and it doesnt work and i dont know why please somebody help this is quite urgent thank merry xmas

local box = script.Parent
local plr = game.Players.LocalPlayer
local redeemed = false

box.FocusLost:connect(function(click)
    if box.Text == "Test" and redeemed == false then
        local player = game.Players:GetPlayerByUserId(click.PlayerId)
        player.leaderstats.Bills.Value = player.leaderstats.Bills.Value + 70
        redeemed = true
        box.Text = "Code Accepted!"
        wait(1)
        box.Text = "Redeem Code"
    elseif box.Text == "Test" and redeemed == true then
        box.Text = "Already Used!"
        wait(1)
        box.Text = "Redeem Code"
    else
        box.Text = "Code Declined!"
        wait(1) 
        box.Text = "Redeem Code"
    end
end)

Do not do this by the client. That's how you get your game exploited and how people develop infinite cash exploits.

Local script:

local box = script.Parent
local plr = game.Players.LocalPlayer
local redeemed = false

box.FocusLost:connect(function(click)
     	local result = game.ReplicatedStorage.TwitterCode:InvokeServer(box.Text)
	if result == "valid & entered" then -- from here you can add the rest of your code system if you like
		redeemed = true
       		 box.Text = "Code Accepted!"
       		 wait(1)
       		 box.Text = "Redeem Code"

		else
			-- sample
		end
	end
        

Create a remote function, put it in replicated Storage and title it accordingly.

Then add a server script to ServerScriptService:

game.ReplicatedStorage.TwitterCode.OnServerInvoke = function(plr, code)
	if code == "Test" then -- doing an extra check for no reason but why not
 	
	game.Players[plr.Name].leaderstats.Bills.Value = game.Players[plr.Name].leaderstats.Bills.Value + 70			 
 	return "valid & entered"
	end
end