Mac Update
Hello! I was just wondering on how to update my MacBook Air 2017? There is no updates available, but I can't download any apps because I don't have an update.
MacBook Air 13″, macOS 10.12
To learn how to update macOS, please read Keep your Mac up to date - Apple Support
To learn how to upgrade macOS to the latest version, please read How to upgrade to macOS Catalina