How to recover Apple account?

Apple has a support page about the recovery key. 

(The recovery key is in "Settings > your name > Password Security"  if you have set one up on your iPhone)

(On Mac, it's in System Preferences ... see the support page below) for details

This is how you would have set up a recovery key:

and

Scroll to see how to: "Use a recovery key"

How to generate a recovery key - Apple Support

If you still need help:

Learn more about using account recovery instead of a recovery key.

How to use account recovery when you can’t reset your Apple ID password – Apple Support

You can learn how to regain access to your account, if security reasons are blocking your access.

What to do: If your Apple ID is locked or disabled - Apple Support

If the above doesn't fix your problem, what do you mean by recover your Apple account? Did you forget your Apple ID? Forget the password for your Apple ID? More information would help.