how to unlock my iphone without using passcode ?

Sorry, you don't. You will need to reset your phone and all data will be wiped. Hopefully you made backups that you can restore from.

If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -

Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

Click on the link for instructions on how to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support

mayada132 wrote:

can i opened it by serial number or another way ?

No. Anything on the phone that was not backed up or synced to the cloud is gone.

No.