Recovery key

You can’t.

Go to the following site, read it:

Using a recovery key is more secure, but it means that you’re responsible for maintaining access to your trusted devices and your recovery key. If you lose both of these items, you could be locked out of your account permanently. With that in mind, it's important to keep your recovery key in a safe place. You might want to give a copy of your recovery key to a family member, or keep copies in more than one place. That way you always have your recovery key when you need it.

How to generate a recovery key - Apple Support

Sagiboi Said:

"Recovery key: How can I reset my lost recovery key please"

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Resetting a Recovery Key:

See here: What if I Lose my Recovery Key? - Apple Support