@MounithaSriplease can you have a look at the My Pega account FAQs page which can answer your question?

If the certificate does not display on your Pega account profile after 5 business days:

1. Log in to your Pearson VUE account and confirm the email address you used to register for the exam.
2. Log in to your Pega account and confirm the email address from your Pearson VUE account is associated with your Pega account.

If the email address from your Pearson VUE account is not associated with your Pega account, confirm you do not have another Pega account associated with the email address used in your Pearson VUE account.

If you have multiple Pega accounts, contact Pega Accounts Support to merge your Pega accounts.

If you do not have multiple Pega accounts, add the email address associated with your Pearson VUE account to your Pega account.

If you need help adding an email address to your Pega account, see the FAQ below: How do I add an additional email address to my Pega account?