don't remember recovery key

If you created a Recovery Key, you basically disabled Apple's Account Recovery process. You would then only be able to regain access with that key. No one here, nor Apple can help you with that key.

At this point you will need to ask Apple's Apple ID Account Security team for further assistance with this matter. To contact them, click here and select your country; if that page doesn't list your country or you're unable to call, fill out and submit this form.

Ref:

• How to generate a recovery key - Apple Support
• How to use account recovery when you can’t reset your Apple ID password - Apple Support

i forgot the recovery code