Mouse ignore models help?

local mouse = game.Players.LocalPlayer:GetMouse()
local Target = mouse.Target
local TargetParent = mouse.Target.Parent
local Hit = mouse.Hit
local Delay = false




mouse.KeyDown:Connect(function(key)
	if key == "f" then
		print(key)
		if  Delay  == false then
		print("delay")
			Delay = true
			print(TargetParent)
			print(Target)
			local Humanoid = TargetParent:FindFirstChild("Humanoid")
			print(Humanoid)
			if Humanoid then
				print((Hit - Target.Position).Magnitude)
				if (Hit - Target.Position).Magnitude < 10 then
					print("Hit")
				end
			end
			wait(1)
			Delay = false
		end
	end
end)

when i aim mouse into dummy it shows other thing

you should update the Current Mouse Target and Hit, like this:

mouse.KeyDown:Connect(function(key)
    if key == "f" then
        Target = mouse.Target
	TargetParent = mouse.Target.Parent
	Hit = mouse.Hit
	--(the rest of the script goes here)
    end
end)

Also mouse.KeyDown is Deprecated so you should use UserInputService