Three of my monitors are not set and are preventing me for having my car tested.

If you have driven for about 25 miles the monitors should have set. Now, the cat monitor needs you to drive at 50 mph for 4 miles. By then the 02 and cat will set. If not then there is something stopping the monitor from running. Without a proper diag equipment you cant tell. Make sure that whoever does check it for you is certified ASE L-1 and also a CT certified emissions repairer. Anyone with those credentials will have the proper equipment and training.