How do I make a GUI pop up for a player after they have touched a brick?

I have a script inside of the brick I want the player to touch. Now I'm not sure how to edit the GUI for that one player and make it visible. Any help is appreciated :)

:To expand on MooMooThalahlah's explanation, you would have to start by making the brick detect when the player has touched it, seen below:

script.Parent.Touched:connect(function(hit)
    print(hit.Parent.Name) -- Replace this with the code you wish to use
end)

Then you would add the code for making the gui visible inside of the function. Hope this helped!