Just wanna know if the giant atx 2 has quick release wheels or thru axle
It has a regular old quick release.
The bike is way too low end to have a thru axle.
You can see from pictures of the bike that it has dropouts in the fork and rear triangle, so the wheels are inserted in vertically. A thru axle does not have dropouts -- the axle has to go through the fork/frame. The wheel cannot be pulled vertically out from the frame.