How do i make a script for a pickaxe that will break a rock and more?

I have no idea on how to make a pickax script that will break a rock and add 1 to a leaderboard section for items? here is the code ive made so far. can someone help me?~~~~~~~~~~~~~~~~~

local tool = script.Parent
local scoop = tool.Scoop

local function OnTouch(partTouched)
	local canHarvast = partTouched.Parent:FindFirstChild("CanHarvast")
	if canHarvast then
		print ("Found an item!")
	end
end

scoop.Touched:Connect(OnTouch)