OK my car broke down at work I replace the cap an rotor. It ran once again but it was misfiring then about of two miles later it shuts off again. The screw on the rotor is missing is this the problem. Or is it the position of the rotor or that I did not disconnect the battery to reset whatever?

You definitely need to replace the rotor's mounting screw or you will destroy the rotor and the distributor cap. It would not surprise me if the problems you are experiencing are related to the Ignition Control Module and/or the coil failing. Here's how to replace them yourself:

https://www.askmehelpdesk.com/cars-t...tml#post265896

Once you replace all of these components, disconnect the negative battery cable for 10 seconds, in order to reset the ECM.