link for GarageBand 10.3.5. Instead, follow these steps to trigger the "Last Compatible Version" prompt: Open the Mac App Store on your older Mac. Click on your Profile/Account (bottom-left corner) to view your Purchase History Find GarageBand in the list of previously downloaded apps. Click the Cloud icon to download.
I understand you're looking for information on a specific version of GarageBand, notably "GarageBand 10.3.5" and potentially a DMG file link for it. However, I must clarify that providing or seeking direct links to software, especially copyrighted material like GarageBand, can be problematic and may violate terms of service or copyright laws. garageband 1035 dmg link
: Version 10.3.5 is generally the last stable version for macOS 10.15 Catalina. If you are on an even older OS like High Sierra, you may need an even older version. link for GarageBand 10