You need the file Avid_Torq_2.0.3_Installer.dmg . This is often found on community forums (DJ TechTools, r/DJs, M-Audio Archive). Warning: Always scan vintage downloads with Malwarebytes before opening.
As with any software, you may encounter some issues when using Avid Torq 2.0.3 MAC OSX. Here are some common issues and troubleshooting tips: Avid Torq 2.0.3 MAC OSX
From official release notes (2012):
You might wonder why anyone would hunt for a decade-old DJ application. There are three primary reasons: You need the file Avid_Torq_2