Are you supposed to feel some lymph nodes there soft move under touch i can't see them but i can feel some in my neck groin and underarm i'm also skinny and they have been feelable for a while no change and they are small they are all fairly small?

There's a couple of possibilities. Yes, you can sometimes palpate lymph nodes in thin people as part of a normal exam. If you are not sick and nothing changes then like most 20-yr-olds you've just noticed something you never paid attention to before. Mononucleosis is prevalent at your age and could cause slightly enlarged lymph nodes and no symptoms or a mild sore throat. Talk to a doctor.