Q: I don't know my rescue email

You need to ask Apple to reset your security questions. To do this, click here and pick a method; if that page doesn't list one for your country or you're unable to call, fill out and submit this form.

(120777)

Contact Apple Support to have your Security Questions reset:

ACCOUNT SECURITY CONTACT NUMBERS

You also might want to look into Two Step Verification (I find it much easier than trying to remember Security Questions or Rescue email addresses)

TWO STEP VERIFICATION

Cheers,

GB