: Click the Get or Download button. This will often open the "Software Update" pane in System Preferences.
: macOS Catalina 10.15.2 Combo Update from Apple Support. File Size : Approximately 4.59 GB . macOS Catalina 10.15.2 Free Download
: The installer (roughly 8 GB) will download to your Applications folder as "Install macOS Catalina". : Click the Get or Download button