How to recover ICloud password

Please see these reads:

If you forgot your Apple ID: 

https://support.apple.com/en-us/HT201487and

https://support.apple.com/en-us/HT204306

If you forgot answers to security questions

https://support.apple.com/en-us/HT201485 

https://support.apple.com/en-gb/HT204169

If your Apple ID is locked or disabled:

https://support.apple.com/en-us/HT204106

If your device has been disabled in the App Store and iTunes:

https://support.apple.com/en-us/HT208856

You can also contact Apple ID Support:

https://support.apple.com/apple-id

 For additional support, in the case of iTunes, you can Contact iTunes Support using this form: https://support.apple.com/en-euro/itunes-contact.