i cannot restore it as my iphone is unlocked
See this Apple article: If you forgot your iPhone passcode
If you forgot your iPhone passcode - Apple Support
and i dont know what to do as i cannot find any information
If you stil have / know the Apple ID, check via your email box, see this Apple article: If you forgot your Apple ID
If you forgot your Apple ID email address or phone number - Apple Support
OR see -> Having trouble signing in?
https://iforgot.apple.com/password/verify/appleid
Try this -> If you can't connect or sign in to iCloud
If you can't connect or sign in to iCloud - Apple Support
See also -> Contact Apple for help with Apple ID account security
Contact Apple for help with Apple ID account security - Apple Support
Click here for more support and assistance.