I forget my iphone xsmax passcode i want to recover my passcode without loosing my data i remember iCloud Id and password which i use in this phone so what can i do now i their any possibility to recover my data ??

Unfortunately, no. Once your phone becomes unavailable, your data is gone. Hopefully, you made backups.

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.

How to remove your iPhone, iPad, or iPod touch passcode without a computer - 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