How do you script a NPC when killed gives you a tool?

I would like to know how to do this script

Inside the NPC add a server script not a local script and put your tool you want it to drop inside replicated storage then write this script.

local PlayerGivenTool = nil

function onTouched(hit)
	if hit.Parent.ClassName == "Model" then
		PlayerGivenTool = hit.Parent
	end
end

script.Parent.Humanoid.Died:Connect(function()
	if PlayerGivenTool ~= nil then
		--Change Tool to your tool inside replicatedstorage
		game.ReplicatedStorage.Tool:Clone().Parent = PlayerGivenTool
	end
end)

script.Parent.HumanoidRootPart.Touched:Connect(onTouched)
script.Parent.Head.Touched:Connect(onTouched)
script.Parent.RightLowerArm.Touched:Connect(onTouched)
script.Parent.LeftLowerArm.Touched:Connect(onTouched)
script.Parent.RightLowerLeg.Touched:Connect(onTouched)
script.Parent.LeftLowerLeg.Touched:Connect(onTouched)