Why does it say "Value is not a valid member of Model", etc. in out put?

Why does it say in output: "17:13:42.515 - Value is not a valid member of Model", "17:13:42.515 - Script 'Workspace.Player1.StarterSword.Handle.LocalScript', Line 13", and "17:13:42.515 - Stack End". The NPC has the value inside of him. How can I fix this?

local debounce = false
local player = game.Players.LocalPlayer

function onTouched(hit)
	if not debounce then
		debounce = true
		if hit.Parent.Name:sub(1,17) == "AFK Noob Lv 1 HP " then
			hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - 25
			if hit.Parent.Humanoid.Health == 0 then
				if hit.Parent.Value == false then 
					player.leaderstats.EXP.Value = player.leaderstats.EXP.Value + 16 
				end
				hit.Parent.Value = true
			end
			wait(0.5)
			debounce = false
		elseif hit.Parent.Name:sub(1,4) == "Noob" then
			hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - 25
			wait(0.5)
			debounce = false
        end
    end
end

script.Parent.Touched:connect(onTouched)