hi i forgot my password in iTunes backup how can i get it

See Disable iOS backup encryption - Apple Community. In particular:

If you have forgotten the password, or were not aware that encryption had been enabled, consider that it might be any computer, Apple ID, Wi-Fi password or device PIN that you've used in the past, working from the assumption that you might have reused a common password that you were using when encryption was first activated. See About encrypted backups on your iPhone, iPad, or iPod touch - Apple Support for details.

tt2

messymano wrote:

hi i forgot my password in iTunes backup how can i get it

Only way to get it is to remember the password you set for it, otherwise you can't use that backup.