Mam, you can contact your child's school authorities regarding this since the school will have the data of all the registered students. You can get you son's hall ticket number from them.

You might also drop an email to the conducting authority on their official email ID: exam@unifiedcouncil.com stating your problem. They will help you out with it and provide you the hall ticket number.

Also, the students are asked to mention their name and hall ticket number on the question paper. You can also check the question paper once if it has been mentioned there.

Nevertheless, he will receive his participation certificate and student's performance report in hardcopy if he had opted for it in the application form, in a few days after the declaration of results.