It literally translates to "You like" or "You enjoy".
For example:
* ¿Te gusta el helado? (Do you like ice cream?)
* A mí me gusta la música clásica. (I like classical music.)
* ¿Te gusta leer? (Do you like to read?)
Important note: "Gustar" is a special verb in Spanish. It uses an indirect object pronoun (like "te" in the examples above) instead of a direct object. It's also used with an infinitive verb when talking about an activity.