I have a iPhone 13 pro max and the Apple ID that I created on my phone is not supported or is not valid what do I need to do in order to get out of the old Apple ID and create a new one

it tells me that my Apple ID is not supported

You are sign in here .  .  .  with your Apple ID(?)

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.

Contact Apple for help with Apple ID account security

Contact Apple for help with Apple ID account security - Apple Support

is not valid and my account is locked

See this Apple article: If your Apple ID is locked or disabled

If your Apple ID is locked or disabled - Apple Support (CA)

-> Get a verification code and sign in with two-factor authentication

Get a verification code and sign in with two-factor authentication - Apple Support

I cannot change my password so is there any help for me and my new phone

Have you forgotten your Apple ID?, Check your Apple ID via your email box, see this Apple article: If you forgot your Apple ID

If you forgot your Apple ID email address or phone number - Apple Support                  

OR see -> Having trouble signing in?

https://iforgot.apple.com/password/verify/appleid

Have you forgotten your password? -> See this Apple article: If you forgot your Apple ID password

If you forgot your Apple ID password - Apple Support

Then see this Apple article: What to do after you change your Apple ID or password

What to do after you change your Apple ID or password - Apple Support