Hi Coney321,
Welcome to Apple Support Communities! We see that you have some questions about third-party app compatibility on the new MacBook Pro and would be happy to help provide more information to consider.
Some third-party apps will require Rosetta 2 in order to be ran on a Mac with Apple silicon:
If you need to install Rosetta on your Mac – Apple Support
For Zoom specifically, the following page provides more information about bug fixes and updates for macOS Big Sur:
New updates for macOS – Zoom Help Center
It doesn't appear that QuickBooks is compatible yet with macOS BigSur, and you'll want to reach out to the developer to further confirm:
System requirements for QuickBooks Desktop 2020 an...
Take care.