Note:
There is no .dmg file for macOS for the current Inkscape version at this time.
If you need a version from the 0.92 series (e.g. because you depend on third-party extensions that have not been updated in preparation for Inkscape 1.0, please use Inkscape 0.92.2 on macOS <= 10.14.
Everyone else, starting from macOS 10.11, can use the latest beta version of Inkscape 1.0 or the development version. Catalina users must use one of these, earlier versions will not run on macOS 10.15.
There will be a notarized and signed .dmg file for the upcoming Inkscape 1.0.