How can I collect my degree certificate (passing year 2010) from Mumbai University if not collected at the time of convocation?

You will receive your degree certificate from Mumbai University in two ways, are

1. You can get them easily using the records of the college where you graduated; they can request your degree certificate on your behalf. Then you will receive the certificate within 4 weeks.
2. You can directly visit Mumbai University and submit a request letter at the counter. They will verify your details and follow the procedures for your degree certificate. 

You can also request it by mail and be patient.