How can I get this 28-character recovery key

Hello sody1994,

Welcome to Apple Support Communities!

If we understand your post correctly, you want to know how to get the recovery key for your Apple ID. We'd like to help you with that.

Generate a recovery key

You can generate a new recovery key from Settings or System Preferences on a trusted device signed in with your Apple ID.

On your iPhone, iPad, or iPod touch

Go to Settings > [your name] > Password & Security. You might need to enter your Apple ID password.

Tap Recovery Key.

Slide to turn on Recovery Key.

Tap Use Recovery Key and enter your device passcode.

Write down your recovery key and keep it in a safe place.

Confirm your recovery key by entering it on the next screen.

On your Mac

Go to System Preferences > Apple ID > Account Details. You might need to enter your Apple ID password.

Click Security.

In the Recovery Key section, click Turn On.

Click Use Recovery Key.

Write down your recovery key and keep it in a safe place.

Click Continue.

Confirm your recovery key by entering it on the next screen.

If you can't create a recovery key on your Mac, use an iPhone, iPad, or iPod touch instead. 

How to generate a recovery key

We'd also like to let you know that you can try account recovery instead of generating a recovery key. See the article below for details and steps on how to start the recovery process if you choose to do so.

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

Thank you for using Apple Support Communities.

Take care!