battery is dead.when attempted jump, horn beeps and car will not turn over???

It does sound like an anti-theft security issue to me. Do the lights flash along with the horn beeping? Maybe the battery is dead in the key fob (if you have one), possibly a blown fuse in the drivers side fuse box, labeled ECU-1G2 (10amp)or another electrical issue with the anti-theft system. Mark @ Katzman Automotive and Transmissions

Bring the battery back to where you purchased it as it sounds like a dead battery and it should be under warrenty

bring it to me i could fix that n.y.