I managed to install the update and I can tell it's a lot smoother than what it was before the update.
I just changed the build number in the NVDAStartupWeb.kext in /Library/Extensions
Do this before updating:
Copy the NVDAStartupWeb.kext to the desktop and modify the build number on the info.plist
Copy the NVDAStartupWeb.kext file to /Library/Extensions/ and overwrite the old one.
Open Terminal and type: cd /Library/Extensions/
Type the following commands in the terminal
sudo chmod -R 755 NVDAStartupWeb.kext
sudo chown -R root:wheel NVDAStartupWeb.kext
Restart MacOS and test. If it didn't work just repair permissions again with a kext installer or First Aid and reboot again. I will work.
Here is mine