Can I restore a historical version of QB?

You've reached the  right place for help, yassminyoussry-v.

QuickBooks Online (QBO) is a cloud based platform where any changes made will automatically be saved in the system. While there isn't a way to restore previous information, you can manually make changes to some transactions which will help correct your balances.

Additionally, we have easy-to-access articles, webinars, and video tutorials that will help you in familiarizing the different tasks, features, and functions of QBO. Below are the following:

• All QuickBooks Tutorials.​
• QuickBooks Webinars.
• Help Articles.

Of course, you're always welcome to visit us again if you need help while working with QuickBooks. It will be my pleasure. Stay safe and have a great day ahead!

@yassminyoussry-v 

You need to have a backup restore app like this one.

https://rewindio.grsm.io/quickbooks