GUI Button appears when Paused

I have a pause screen that stops everything but how do i make a GUI button (that will actually work) appear when the Escape button is pressed.

how about you go and learn how to do it 1st then if your have problems with your code post here. No-one is just going to write your code for you so stop being so ignorant. Here is the Unity official GUI tutorial and here is the sites FAQ in which it clearly express that when you ask a question make sure it is detailed and specific.