I’m doing a comprehensive paper on the on the development of the atom bomb for my history professor, and I was wondering how the U.S. scientists censored themselves in their research papers when they were trying to keep their advances on its construction out of the hands of the Germans. Also, prior to 1933, Germany had the most Nobel laureate scientists, but after WWII when the Jews came to the U.S. we have the most Nobel laureate scientists. Did that change Germany’s economy or education system? If so, how, and is it still affecting things there today?
As a history professor who works on the history of the atomic bomb, I would suggest picking one of these topics and diving into it in detail. You shouldn't try to write a fully comprehensive paper on the atomic bomb — there's too much there, you'll just end up skimming the surface and not saying anything new or interesting. But if you focused on the censorship of scientists in the early period of the work, that would be a great paper, even a great thesis. As would the effects of the "brain drain" of Jewish physicists on Germany.
For the first part, what you want to look at is Leo Szilard's self-censorship campaign, the problems that it ran into, and then what happened to it in the time after it failed, but prior to the US military getting involved in the work. It is a very interesting story about scientific norms, secrecy, and institutions. A paper worthy in and of itself. A very good place to start is this article, which you can probably get through your university's library system (or sci-hub or whatever): Spencer Weart, "Scientists with a Secret," Physics Today 29, no. 2 (1976). It will give you the basic overview and places (and names) to dig in further. Richard Rhodes' The Making of the Atomic Bomb is also a good reference on this. (My book on the history of nuclear secrecy in the US would also be a useful resource but it is not published yet! But the entire first chapter of the book is on exactly this issue.)
On the brain drain, I don't know of any paper or book that tries to really pin down exactly the harm to the economy or university system caused by the Jewish emigration out of Germany. Beyerchen's Scientists Under Hitler may be a useful resource on this front. This is the harder of the two topics, because you are trying to make a counterfactual argument in the end ("if the Jewish professors hadn't left, what would the German scientific/educational/economic situation be?") that is a tricky one (since of course if they hadn't left, they would have been put in camps, eventually).
These are just a few suggestions to get started... each of these could be a very fruitful topic! Again, I recommend focusing in on one of them, not trying to do everything at once.