You should retrieve your driver's license and vehicle registration after completing the necessary registration process for your vehicle. The specific timing depends on your state's DMV or motor vehicle office processing times and regulations.

• Generally, vehicle registration must be completed within a certain period after vehicle purchase—commonly around 30 to 60 days. During this time, a temporary permit or tag is often issued.
• Permanent registration documents such as plates and registration cards are usually provided after registration processing, which can take a few weeks.
• For driver's licenses, you typically retrieve or renew them in person or by mail depending on your state DMV's procedures; there is no standard "retrieve" time as with vehicle registration.
• If you purchased your vehicle through a dealer, many handle title and registration for you and provide temporary permits until permanent documents arrive in the mail, often within 2 to 6 weeks.

Therefore, you should retrieve your registration once your vehicle registration is processed (often within 30 to 60 days of purchase) and your license if renewing or replacing it according to your local DMV procedures. If waiting for registration, use temporary permits or tags as allowed to legally drive until your official documents arrive.