ToolScript (stacks + Amount)

Tool = script.Parent

player = game.Players.LocalPlayer
Frame = player.PlayerGui:WaitForChild("BackpackGui").Frame

Tool.Amount:GetPropertyChangedSignal("Value"):Connect(function()
    Frame.usesLabel.Text = "Uses: "..Tool.Amount.Value
end)
Frame.usesLabel.Text = "Uses: "..Tool.Amount.Value

Tool.Activated:Connect(function()
    if Tool:WaitForChild("Amount") and Tool.Amount.Value > 1 then
        Tool.Amount.Value -= 1
    else
        if Tool:WaitForChild("stacks") and Tool.stacks.Value > 1 then
            Tool.stacks.Value -= 1
        else
            Tool:Destroy()
            Frame.usesLabel.Visible = false
        end
    end
end)

Tool.Equipped:Connect(function()
    Frame.usesLabel.Visible = true
end)

Tool.Unequipped:Connect(function()
    Frame.usesLabel.Visible = false
end)