how do you mention the player hitting a part ?

Here's the code I whipped up:

script.Parent.Touched:Connect(function(touched) --touched is the bodypart that the player touched the part from

if touched.Parent:FindFirstChild('Humanoid') then --if the thing that touched is a character then
	local player = game.Players:GetPlayerFromCharacter(touched.Parent) --get the player from the character
	--do whatever with the player from here
end