I just want to put it into my pokedex so I can try and trade for one.
If you beat the Pokemon league you can get bugsys number(he's in viridian forest on Thursdays) and if you call him he will ask you to battle on a certain day/time. He will be in the fighting dojo and his "star" Pokemon is Scizor.
Source: saw the Scizor myself
Hope this helps!