Just to be sure. The link i gave you is with Windows Installation pre selected. In that page, on the left side, make sure you select the one for your operating system.
Make sure you gave it the correct permissions on mac. I don’t work with mac’s too much. But after installing you find it in the toolbar “Utilities” in fusion360. You can also check the settings in fusion and under plugins see if it’s checked. Last time i installed in a mac, it worked without any problems.