If you have registered for BEd under any university, then you can get the registration in the registration certificate which is provided to you from the college. Now if you don't get the certificate hardcopy, contact your college/Department and they will provide you the necessary details. There are no other ways to retrieve your BEd Registration Number.

To know more about BEd as a career, visit the link below:

https://www.careers360.com/courses/b-ed-bachelor-of-education

I hope this answer helps. All the very best for your future endeavors!