I forgotten my blackberry password and ID can’t do factory reset without them what can I do.

Nothing really. You now have a brick.

To reset your password on a computer, visit www.blackberry.com/blackberryid. Click Reset your password. ...

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To reset your password on your BlackBerry device, when you are prompted to sign in with your BlackBerry ID, click Forgot Password. Answer your security question and complete the instructions on the screen.

Would any of that matter if the OP forgot the ID - which would have been an email address?

Usually folks have only a few email addresses over time
Therefore try each one until the system says reply sent.
There may be a lockout if too many are tried. If so wait the required time.

Chimera Tool is the answer. it'll cost you a few dollars but it removes BBID/BB Protect from the phone and makes it basically brand new.