Trouble installing Mac Support Files

Wondering if anyone has run into any issues with trying to install setup file on Mac. This is my first time attempting to use the Mac Support Files, however I continue to run into Verification issues. As a long-time Mac user I know that you can go to Privacy and Security and click “Allow”, however this just then moves on to the next file, again blocks due to verification issues, and gives no options to continue other than to just cancel. I’ve tried on 2 separate Macs and every QT of every type is blocked. Does anyone know a workaround, or is something new that Catalina is causing?
Thanks