The movie doesn’t assume or require any understanding of nuclear physics, which may explain why so many non-physicists enjoy it.
One doesn’t need to understand marine biology to watch Jaws, or Roman history to enjoy Gladiator.
Nah, I prepped for Interstellar and flunked it anyway.
/ just kidding, of course.
Haha okay!
For better or worse the movie focuses mostly on Communist prosecution of scientists and not on the scientific aspects of building the atomic bomb. You’ll be fine