When i forget the password for webassesor account then didn't recieve any email

Hello @Ashwani Saklani i guess you have also checked in your Spam folder.

In this case please open a case to Salesforce (open a case) to try to get something done to help you. Have you checked that the email is the one you used to create the account (for example for me it is not my professional email address, but my personal one).

Eric