How to make it when you press a button another one shows up?

Here is my code:

local sound = game.workspace.Money
local cost = 0
local touchedalready = 0
local player = game.Players.LocalPlayer
workspace.FloorExtension.Touched:Connect(function(hit)
    repeat wait() until _G.button1bought == true
    script.Parent.Transparency = 0
    script.Parent.CanCollide = true
    script.Parent.Touched:Connect(function(hit)
    if hit and hit.Parent and hit.Parent:FindFirstChildOfClass("Humanoid") and game.Players:GetPlayerFromCharacter(hit.Parent) then
    local player = game.Players:GetPlayerFromCharacter(hit.Parent)
    local leaderstats = player:FindFirstChild("leaderstats")
        if leaderstats then
            local MoneyValue = leaderstats:FindFirstChild("Money")
            if MoneyValue then
                if MoneyValue.Value  >= cost and touchedalready then
                    touchedalready = 1
                    MoneyValue.Value = MoneyValue.Value - cost
                    sound:Play()
                    wait(0.01)
                    script.Parent:Destroy()         
                end
            end
        end     
    end
    end)
end)

This doesn't work since it never sets the transparency to 0 or making it so you can collide with it, meaning its not working and i don't know how to get the button1bought variable since its not on leaderstats so i can't use that, and i know not to use _G but i don't know what else i can use for the variable.