OK so you've dis-assembled the freewheel, which I assume at this point you don't wish to rebuild. If that's the case, it's easy to get the body of the hub.

If you have a big Stilson (pipe) wrench, fit it over the body wherever you can get a purchase and spin it off to the left. I saod spin it off, but be aware it takes serious torque so you want a wrench that reaches all the way out to the rim and expect to put elbow grease to it.

Alternatively, see if you can get a bite on it with a vise, probably best to hold on the two recesses that the pawls pocket into. Tighten the vise firm, but don't go crazy because ovalizing the body will make it harder to turn off. Now grab the wheels at 9 and 3 and Channel the spirit of Ralph Cramden, and pretent you're making a left turn on a big bus without benefit of power steering.

Whether you use the pipe wrench or vise, don't be surprised if your wheel protests a bit with some spoke pinging, thise guys are in tight.

BTW- if you want to save and rebuild the freewheel, you need a freewheel tool - SunTour 2-prong version, regardless of brand. Fit it to the 2 notches, secure it with your QR skewer, and turn it off. The minute it moves, loosen the skewer to allow the body to move out on the threads.