Hey I have a 2001 accord lx and my check engine lights on got diagnosic and said it was the ignition control module. The shop told me to replace the whole distributor. Can't I buy the module

Sure, you can only replace the ICM--here's how:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-4.html#post265896

I'd recommend, however, that you also replace the coil and rotor, while you are inside the distributor.