Formal:
* Vous aimez lire? (This is the most formal way to ask the question.)
* Aimez-vous lire? (This is slightly less formal than "Vous aimez lire?")
Informal:
* Tu aimes lire? (This is the informal way to ask someone you know well.)
* Est-ce que tu aimes lire? (This is another informal way to ask the question.)
You could also say:
* Êtes-vous un(e) lecteur/lectrice assidu(e)? (This means "Are you an avid reader?")
The best option for you will depend on the specific situation.