how to restore iPad because I forget the password

EthanArthur2019 wrote:

If I forget my unlock password what can I do to recover and not loose any of my data?

Your only option If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

And just to be clear, when you unlock the device, you will lose ALL data and contents on the phone. If you have a backup, you can restore the backup after you unlock it, but if not, you have to start all over again.