You have played 39 games on chess.com. I assume this is not the first time you are trying castling.
Your question implies that you are having difficulty playing against the computer. Which one? The ones in Live Chess or the ones in Play Vs. Computer?
can anyone please tell me how to make a 0-0 or 0-0-0 move in which king moves two places towards the rook. I am not able to do that in chess.com while I play against the computer.