Fusion 360

i am attempting to download the processor for fusion 360 but am unable to as my computer doesn’t know what program to use. I search the internet and the only one that comes up is one that is 4.99 and got 1 star. Can anyone tell me how to do this?

C:\Users<username>\AppData\Roaming\Autodesk\Fusion 360 CAM\Posts

Then on the Post Process window click the Setup button and select “Use Personal Posts” and it will give you the list of post processors in that location.
Or
https://inventables.desk.com/customer/en/portal/articles/2332499-installing-a-fusion-360-post-processor-on-a-mac?b_id=9563