When you are exporting (or saving), do you get the opportunity to enter a filename? There are rules for names. Upper Case Letters, lower case letters and numbers are OK. -Dash- and underscore are the only two valid punctuation marks.
Use ISO dates. Today is 2021-07-02.
You get no error messages at all?
One more Mac-ism.
You downloaded the audacity-macos-3.0.2.dmg file, right? Double click it and it will display an installer graphic.
Drag the Audacity.app Picture to the Applications Picture.
It’s possible to miss this step and be running a Partial Audacity. A Partial install will not be able to access the drives.
The virus scan came back clear it didn’t detect any viruses. When I try to export it doesn’t give me the opportunity to enter a filename at all nothing like that pops up on the screen. And I get no error messages at all. And I did download the audacity-macos-3.0.2.dmg file and did exactly as the installer instructed.
It shouldn’t, but given that there’s something very weird going on, I wouldn’t make any guarantees.
I assume that “Save Project” does nothing as well? If you can save the project first, do so. Otherwise, I think you have nothing to lose because currently there’s no way to get the audio out of Audacity.
That should not make any difference. No changes are made to the Audacity application once it is installed. The way to completely reset Audacity is to delete the audacity.cfg file located in ~/Library/Application Support/audacity.
Do you remember where you downloaded Audacity from originally, and where you got the “new” one?