Adobe does not offer "Adobe After Effects 2020" as a permanently free software. There are two primary ways to access it:
New expressions support for easier template creation. Availability & "Free" Access Adobe After Effects 2020 17.0.5.16 Free Download
You can download the latest version for a 7-day trial period through Adobe Creative Cloud. Adobe does not offer "Adobe After Effects 2020"
Enhancements to removing objects from video clips. Adobe After Effects 2020 17.0.5.16 Free Download
Adobe After Effects version is a specific update released in March 2020 as part of the Adobe After Effects 2020 cycle . While this version is still widely searched for due to its stability on older hardware, users should be aware of official versus third-party download methods. Technical Overview Version: 17.0.5.16 (March 2020 release).