There is a contact link.
Apple Support by e-mail or chat Select your device, Battery, Power and Charging, then Power adapter not working to get a chat option.
See if this helps.
On your device, go to Settings → iCloud → Keychain and switch Keychain off then on again.
Tap "Approve with Security Code", tap "Forgot Code" and then tap "Reset".
Follow the instructions to reset iCloud keychain and create a new passcode.
You will then be prompted to update to your new number.
Learned from Zinacef
That looks like 2 step verification to me, if you don't have a trusted number or trusted device to unlock access you will need to use your recovery key at My Apple ID
Sorry but none of the step are working. It doesn't take to me to the identify identity page it just ask me for my old number that ending in xxxxxxxx12
Is there an option to change the number?
No there is not.
i cant access my icloud account cause i cant verify my old number help!