why is my rating not going up when I beat someone of a higher rating
It's possible that you might have been playing an unrated game. ( https://support.chess.com/article/1311-how-do-i-play-an-unrated-game )
But if you're talking about this particular daily game you played today (https://www.chess.com/game/daily/479581675) and where the rating difference was 200, it was indeed rated, and you did gain a +10 rating from it.