: You can find your official serial numbers and product keys by signing into the Autodesk Account Portal Trial Activation : If you are testing the software, you can start a free trial directly through the official installer.
A: Autodesk provides official installers via their Autodesk Account portal. A legitimate .dmg for AutoCAD 2020 would be named something like AutoCAD_2020_English_mac_osx.dmg and is digitally signed by Autodesk. Always check the code signature using codesign -dv /path/to/installer.app . Xf-adsk2020.dmg
If you are looking for legitimate ways to activate your software, you should use official Autodesk Product Keys or sign in through your Autodesk Account View Licenses : You can find your official serial numbers