Eventually when you want to withdraw or reset a password. Binance will send a verification link to that email address to approve your withdrawal or password reset. In other words, without access to the email address, you Binance account is useless.
I would first try to recover the email address if I were you.
There is a way to change the email address once op gets the password right (triggers new device login verification) or get an access to their account (access the account right away) BUT the catch is, it is very risky 'cause you can trigger the account verification but if op is lucky, a set of security questions could be enough. If op has exhausted all their options, it wouldn't be completely useless.
...For Lv1 users, according to your account information, you will be required to answer security questions or to complete account verification.
but ofc recovering the email address would make things a lot easier and less riskier for op, if you still haven't looked into that op, I'm also suggesting you do it!