Recovery key

You can create a new one:

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You can sign in to your Apple ID account page and create a new Recovery Key using your Apple ID password and one of your trusted devices.

1. Go to appleid.apple.com.
2. Sign in with your password and trusted device.
3. In the Sign-In and Security section, click Recovery Key > Change Recovery Key.

Keep your new Recovery Key in a safe place. Your old Recovery Key won't work anymore and you can't use it to reset your password or access your account. If you don't see Recovery Key in the Sign-In and Security section, then you are not using two-step verification. 

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copied from: Two-step verification for Apple ID - Apple Support

Sagiboi Said:

"Recovery key: What to do when I lost my recovery key, can I change it ?"

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Troubleshooting Lost Recovery Key:



Go Here: What if I Lose my Recovery Key? - Apple Support

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