: If the version you need (like 2020) is no longer listed in the app, you can contact Adobe Customer Care

Downloading software like Adobe Illustrator 2020 from unofficial sources such as Google Drive links is strongly discouraged due to significant security and legal risks . These files are often bundled with malware or viruses.

Instead, the safest way to access previous versions of Illustrator is through official Official Ways to Get Older Versions Adobe typically provides the current version one immediately preceding it through the Creative Cloud desktop app. Adobe Creative Cloud Desktop App

: This site is a well-known resource that hosts direct download links to official Adobe servers for older versions, though newer CC versions (after 2019) may have more restricted access. System Requirements for Illustrator 2020 Can I find an older version anywhere? : r/AdobeIllustrator