My iPhone was stolen and forgot iCloud passwords. How to restore pictures from icloud to new iphone? Thanks

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

or go directly to this link --> http://iforgot.apple.com/

Also read about "What to do after [or before] you change your Apple ID email address or password" - https://support.apple.com/HT204071

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

'If you're missing photos or videos in the Photos app' on a mobile device, click here --> https://support.apple.com/HT205912

Sorry, here's that last document as a live link.

If you're missing photos or videos in the Photos app - Apple Support