In 3ds Max bvh files work only with biped (plugin).
Go to: Main menu > Create > Systems > Biped. Or Command panel > Create tab > Systems item > Biped button. When you create biped object in scene select all him bones and go to: Command panel > Motion tab > Parameters button > Motion capture dropdown > "Load motion capture file" button. In "Import" window choose value "BVH" in "Files of type" field and pick needed bvh file, press "Open" button. BVH file must be prepare special for 3ds Max.
This is the only way to import bvh file to 3ds Max without added plugins.