Old Apple ID

Enter the Apple (iCloud) ID, and click Forgot Password. See if you can get a Rescue or Notification email option. Link to contact Apple Support at the end of the 2nd article.

Apple ID - Manage  -     

Apple ID – Forgot Password  *      

Hi AbelDuck. I have understood that you would like to change your current Apple ID email to a new one.

You would be able to do it if you have access to your Apple account (even if you do not have access to the email)

In this case you could follow the steps outlined in this article: [Change your Apple ID https://support.apple.com/en-us/HT202667]

You said you had no access to the email account, but said nothing about the Apple ID account. Unless the email address is an iCloud email address, the Apple ID and email account are completely separate and have no link to each other.

If you know the password for the Apple ID, you can access it and updated its email address. The availability of the email account has no bearing on this.

If you don't know the password for the Apple ID, then you will need to contact Apple Support to reset it, since you will need it to sign out of iCloud on any device that is still signed in to it.

Link-> How to use account recovery when you can’t reset your Apple ID password - Apple Support

Link-> Contact Apple Support

If you still know the password for the Apple ID, you can simply update the email account to a new functional one. See here: link-> Change the email you use as your Apple ID - Apple Support