Was the Horten Ho 229 flying wing a three-point-landing aircraft?
The term "3 point landing" is derived from old taildragger (3rd wheel in back) designs.

In reality a 3 pointer is not desirable, as the wheel, front or back, being away from the center of gravity, can produce a nasty pitch if it bounces. At landing speeds this can be uncontrollable.  The term "3 pointer" does imply good landing speed management, as the plane, slightly nose up, has been flared properly, and will "settle" gently to the ground.  Most of the time the pilot will strive to land on the main gear, bleed off more speed, then allow the 3rd wheel down before taxiing off the runway.

The Horton Ho229, if it ever flew, was designed to land under wartime conditions.  Even jets were very vulnerable when slowing to land, and many times paved smooth runways simply were not available (survivable) options.

So the huge front wheel was basically overdesigned for less than perfect landings.  However, landing technique, even for this fantastically futuristic aircraft, would be similar to other planes.