Hello Sagar

If you forgot ur CET user id, you can get it where you applied for CET ie in cyber center,once you got ur user id, you can change ur password, click on forgot password& then enter ur I'd & application number& then click on upper region where they gave a chance to change password then you enter your date of birth& you will get a otp enter it & enter the security code, you will get a chance to change ur password, select the word which you like as ur password, it should contain 8 digits with atleast one alphabet, one number& (@) submit it then ur password will change ok.

Hope this will helpful

Good Luck.