How to change phone number for verification code to set up Apple Pay?

Hello riley1233,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with getting a verification code. This article goes over the different ways that you can receive your verification code: Get a verification code and sign in with two-factor authentication - Apple Support

"Use the code displayed on your trusted device

If you have a trusted device running iOS 9 and later, OS X El Capitan and later, iPadOS 13 and later, or watchOS 6 and later, the verification code is displayed automatically on your trusted devices.

1. Sign in with your Apple ID and password on a new device or browser.
2. Look for a sign in notification on any of your trusted devices.
3. 
4. 
   
5. Tap Allow to receive your verification code.
6. Enter the verification code on your other device to complete sign in.

Get a text or phone call

If you don’t have a trusted device handy, you can have a verification code sent to your trusted phone number as a text message or phone call.

1. Click Didn't get a verification code on the sign in screen.
2. Choose to have the code sent to your trusted phone number.
3. You'll get a text message or phone call from Apple with your verification code. This text message might include an additional domain validation line. This line includes the @ symbol, the website name, and your code (for example: @icloud.com #123456 %apple.com).
4. 
5. 
   
6. Enter the code on your other device to complete sign in.

Get a code from Settings on your trusted device

If you can’t receive a verification code on your trusted devices automatically, you can get one from Settings, even if your device is offline.

From your iPhone, iPad, or iPod touch

If your device is online:

1. Go to Settings > [your name].
2. Tap Password & Security > Get Verification Code.
3. 

If your device is offline:

1. Go to Settings > [your name].
2. Tap Password & Security. 
3. A message says "Account Details Unavailable." Tap Get Verification Code.

From your Mac

1. Go to Apple menu  > System Preferences, then click Apple ID.
2. Click Password & Security > Get Verification Code.
3. 

If you still can't sign in

If you can’t sign in, reset your password, or receive verification codes, you can request account recovery to regain access to your account. Account recovery might take a few days or longer, depending on the specific account information you can provide to verify your identity."

When completing Account Recovery, please make sure to power down all devices that are signed in with this Apple ID, besides the one being used to complete the request, to assist with quicker handling as using other devices with this account during the recovery process could cause your request to become cancelled.

If you have other questions about receiving your verification code, please reach out to Apple's Apple ID team here: Get Support

We hope this helps.

Cheers!