How do i increase a IntValue in playerstats by left clicking?

1. So basically i have this punch script and i would like to make it so when you punch your strength goes up in leaderstats. How do i go about adding to that value everytime left click is fired.

2)How do i add a delay for the animation so it is not spammed, I tried with wait(10) but that did nothing

Heres the animaton script

local Plr = game.Players.LocalPlayer
local UserInputService = game:GetService("UserInputService")
local Char = Plr.Character or Plr.CharacterAdded:Wait()
local Humanoid = Char:WaitForChild("Humanoid")
local Anim = Instance.new("Animation")
Anim.AnimationId = "rbxassetid://5005123017"
local track = Humanoid:LoadAnimation(Anim)

UserInputService.InputBegan:Connect(function(InputObject)
  if InputObject.UserInputType == Enum.UserInputType.MouseButton1 then
    track:Play()
    wait(10)
  end
end)

And heres my leaderstat(forgot to add)

function onPlayerEntered(newPlayer)
	wait(.5)
	local stats = Instance.new("IntValue")
	stats.Name = "leaderstats"

	local strength = Instance.new("IntValue")
	
	strength.Name = "Strength"
	strength.Value = 0

	strength.Parent = stats	
	stats.Parent = newPlayer
end

game.Players.ChildAdded:connect(onPlayerEntered)