How do I access my Apple ID backup code

I am not clear on what you are referring to. Are you looking for information related to iCloud? Provide more details on what you are looking for so that the reader of your post can attempt to provide a solution. Thanks.

Axel F.

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

1. Go to Settings > [your name] > Password & Security. You might need to enter your Apple ID password.
2. Tap Recovery Key.
3. Slide to turn on Recovery Key.
4. Tap Use Recovery Key and enter your device passcode.
5. Write down your recovery key and keep it in a safe place.
6. Confirm your recovery key by entering it on the next screen.

On your Mac

1. Go to System Preferences > Apple ID > Account Details. You might need to enter your Apple ID password.
2. Click Security.
3. In the Recovery Key section, click Turn On.
4. Click Use Recovery Key.
5. Write down your recovery key and keep it in a safe place.
6. Click Continue.
7. 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. 

Use a recovery key

If you forget your Apple ID password, you can try to regain access using your trusted device protected by a passcode. Or you can use your recovery key, a trusted phone number, and an Apple device to reset your password. Make sure the device is running iOS 11 or macOS High Sierra or later, and be sure to enter the complete recovery key including upper-case letters and hyphens. Learn more about what to do if you forget your Apple ID password. 

If you decide to stop using a recovery key, follow the steps above on your iPhone, iPad, or iPod touch, and slide to turn off Recovery Key. On your Mac, click Turn Off in the Recovery Key section.