You can not tell too much from looking at one or two tracks. However if you follow deer tracks for awhile there are several clues as to weather they are doe or buck.
Bucks tend to drag their feet some in a couple inches of snow. A doe will go under low tree branches and between bushes in tight quarters, while a buck would go around. The doe will squat and leave a hole in the snow when urinating while the buck will often stand and pee or pee while walking. Of course if the tracks lead to a rub or scrape and show signs the animal used it, there is not much dout it was a boy.

Robin