iCloud

forgot my iCloud sign in

Click on this link to read what to do "If you forgot your Apple ID" --> https://support.apple.com/HT201354 Note that typically this is an email address you use.

and password

Click on this link to read what to do "If you forgot your Apple ID password" --> https://support.apple.com/HT201487

Also read about "What to do after [or before] you change your Apple ID email address or password" - https://support.apple.com/HT204169

If you still need help:

Contact Apple for help with Apple ID account security "This article provides country-specific Apple Support contact information for customers seeking help with their Apple ID password or other security-related issues."

https://support.apple.com/HT204169

You must at least remember Apple ID address ( if you were sending mails from this mail address to colleagues / friends ) ask the mail address .

To reset password use a web browser and open iforgot.apple.com and follow the upcoming instructions If you forgot your Apple ID password - Apple Support

brigida177 Said:

"iCloud: I broke my iPhone and forgot my iCloud sign in and password how can I get it"

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Use these Forums' Credentials:

You are able to log in to these forums just fine. So, the password would be no different, given it is the same Apple ID.