The spool on my brand new not used quantum bait caster won't spin when I try to put line on it. It will spin regularly but as soon as I tie the knot and turn the handle the spool won't spin. I checked the drag on it basically everything that you could check it just won't work. has anyone else experienced this?

Is it possible you are experiencing the line sliding on the spool, which is in fact rotating?  They are so smooth that rotation is not a piece of cake to detect when line is not solidly attached to the spool.  What you describe seems almost impossible.  If the line is not sliding on the spool, and the drag is set solidly, and the spool is not rotating, it is not engaging  on the retrieve, which means a defective reel.  After free-spooling, when you start the retrieve, you should hear and feel a click as the spool engages with the gear train connected to the handles.

make sure you did not adjust the star drag all the way in the off position. try setting it in the middle of its adjustment.  otherwise your line is slipping most likely