I have filed for an annulment and am just wondering how long it usually takes for the judge to schedule a hearing.

Unless there are some special circumstances, there is no real reason for the judge to schedule a hearing. Without more information, such as when you served the other side, if you defaulted the other side, or if there was a mediation with a settlement, I really can't help you further. If you want, I offer an initial 1/2 hour consultation for free. Then I might learn more, and be able to assist.