I took mine on 12/10/07 and my score arrived on 1/10/08. The NBME website says that you can expect your score within 3-6 weeks after taking the exam, but I think the majority of people get their scores within 3-4 weeks. They don't send out paper copies of your score, but rather they'll send you an E-Mail when you score is available online at the NBME website.