This fix applies to Mac OS Catalina 10.15 and Audacity 2.3.2. You must be running Audacity 2.3.2 or higher in order for this fix to work. Previous versions of Audacity don't work with MacOS Catalina.

Here's the line you need to copy/paste into the terminal window:

================THE LINE IS BELOW=================
open /Applications/Audacity.app/Contents/MacOS/Audacity
================THE LINE IS ABOVE=================

You are performing this fix at your own risk. Do not use a computer that you rely on for work or any other critical use!