You cannot use the backup. There is no way to use an encrypted backup if you cannot remember the password. See this, About encrypted backups on your iPhone, iPad, or iPod touch - Apple Support
You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
Question marked as
Top-ranking reply
You cannot use the backup. There is no way to use an encrypted backup if you cannot remember the password. See this, About encrypted backups on your iPhone, iPad, or iPod touch - Apple Support
1 reply
Question marked as
Top-ranking reply
what can I do if I can't remember my password to restore a backup in my phone from my computer