What does dreaming of someone you like mean?

Just that you're thinking about them alot and your brain is reflecting that into your dreams.

It means that you've been thinking about that person a lot. Especially before you go to sleep.

it either means you like them or something.

Depends what happened in the dream, It could mean you like them just enough to dream about them

Dreams reflect the thoughts and feelings of the dreamer. They provide no information about anyone else's thoughts or feelings, and they do not predict the future.