How to know if my film camera is any good?

I have a nikon 55 film camera with a 28-80mm lens. What is it worth is it quality?

Take it to a camera store and they will probably help you check it out if you buy a roll of film for it. The quality is that of a low cost beginner or family snapshot camera. It has an auto film load and reverse-feed that can be a problem. In good working condition it is worth $20-25. The photos you create with it could be priceless.