If you are asking about BlackBerry ID (BBID) then see
How to regain access to your BBID - BlackBerry Support Community Forums
However, and this is very important, note the OS version you are running. If it is 10.3.2 then the device software includes the new BlackBerry Protect Anti-Theft feature. If this is the case and Protect is enabled, the option of creating a new BBID and wiping the device won't work for you.