The story of the Oppenheimer movie mainly focuses on Oppenheimer's life and his role in the creation of the atomic bomb. It delves into his relationships, his inner conflicts, and the consequences of his work on the world.
I'm not sure if 'Oppenheimer A Horror Story' is specifically a book or a movie. It could potentially be a creative work in either form, or perhaps it's a title used in a more general sense like a blog post or short story that hasn't been widely known in a mainstream book or movie format yet.
Partly. The movie takes inspiration from actual history and Oppenheimer's role in the development of the atomic bomb, but it also incorporates fictional elements for dramatic effect.