Click your in the bottom-left corner to see your Purchased history. Locate GarageBand and click the Download cloud icon.
Be prepared to download the "Essential Content" (roughly 2GB) upon first opening. garageband 1035 dmg link
Instead of risky third-party DMG links, the most reliable way to obtain 10.3.5 is through your : Open the App Store on your Mac. Click your in the bottom-left corner to see