You have successfully upgraded from High Sierra to Catalina. You now have access to features like Sidecar (using an iPad as a second screen), Apple Arcade, and the enhanced security features of macOS 10.15.
Before proceeding, it is important to know that macOS Catalina (10.15) is the version that ended support for 32-bit applications. If you rely on older software (like older versions of Photoshop, Microsoft Office 2011, or some games), they will stop working after this update. how to update macos high sierra 10.13.6 to 10.15
Because macOS Catalina is no longer the newest version, Apple sometimes hides it from the standard "Software Update" section. The easiest way to get it is via the App Store. You have successfully upgraded from High Sierra to Catalina
After installation, your Mac will be on . Check for updates to get the final version (10.15.7) via System Preferences > Software Update. If you rely on older software (like older