What is do they have prom in college?

No, colleges in the United States generally do not have proms. Prom is traditionally a high school event. Colleges often have formal dances or events, but these are usually different in style and purpose than high school prom. Some colleges might have themed dances hosted by student organizations. For example, there could be a "Roaring Twenties" dance or a Halloween costume ball.

If you're interested in campus life, you might want to look into <a href="https://www.wikiwhat.page/kavramlar/Student%20Organizations">Student Organizations</a> or <a href="https://www.wikiwhat.page/kavramlar/Campus%20Life">Campus Life</a> in general. Information can be found on the specific college's website.