Disclaimer: I cannot provide direct download links, as linking to older versions outside official channels may violate Autodesk's terms of service and copyright.
Here is a guide on how to find the download, what to expect from the trial, and important considerations before you install.
. However, please note that Autodesk typically only offers the latest version for direct trial downloads. How to Access Older Versions Like 2020
Since 3ds Max 2020 is now an older release, follow these steps to see if it is available for your account: Check Your Autodesk Account : Sign in to the Autodesk Management Portal