How can I download a iOS Shortcuts file to my Mac?
You can save a shortcut you have on your iOS device to a .shortcut file using this shortcut: Save .shortcut. This works with shortcuts you’ve created or imported from iCloud.
Run the shortcut to be prompted to choose a shortcut from your list of shortcuts, then the Quick Look action opens the shortcut as a file, and you can share the file using the Share button in the top-right to Save to Files, AirDrop or elsewhere.
Unfortunately it’s no longer possible to import .shortcut files back into the Shortcuts app by opening them on iOS.