Symantec 14.x Client on macOS Catalina

     I ran across an issue with macOS Catalina this week where a fresh install resulted in a version of macOS where our initial Symantec 14.2.x installer would not function; trying to run it just resulted in a "cannot be opened" message.  Now, this wasn't your typical Settings --> Security --> Open Anyway type of fix and I have a feeling it is related to some 32-bit code still present there.
     As a side note, I knew that this version of Symantec worked on Catalina as I have upgraded several with it already installed and things function normally.  So, I found this workaround to do a fresh install on a Catalina based system.

• Download and extract your Symantec Installer from the .zip file

• Open a terminal and cd to the location of the extracted Symantec installer 

• cd /Users/user_name/Downloads/Symantec\ Endpoint\ Protection 

•  Now is where the fun begins if you have never played with macOS installer packages

• cd Symantec\ Endpoint\ Protection\ Installer.app/
• Yes, it is just a folder when accessed from the terminal
• cd Contents\MacOS\
• chmod 764 Symantec\ Endpoint\ Protection\ Installer
• Change permissions so you can execute the script
• ./Symantec\ Endpoint\ Protection\ Installer
• Launch said script

This will launch the typical graphical installer that you would expect to see including the warning about a reboot required.  Try it out, it worked for my case.