If you want to get your Class 10th Roll Number, you can get it from the Hall Ticket/Admit card of your 10th Board. In the Hall Ticket you will get two numbers one is the Registration Number and the other is the Hall Ticket Number/Roll Number.

To know more about Tamil Nadu SSLC visit the link below:

https://school.careers360.com/exams/tamil-nadu-sslc

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