it's not connected.
3d printer software loads some weird com ports - but if the printer was actually connected you would have an actual com port number next to the entry.
And I can't see one.
Sometimes you need to load several 'driver' packages from different websites, before it will work.
should be and ender 3 wiki around somewhere which would have all the relevant info.

try this: https://creality3d.wiki/ender-3/start