If you are talking about the late Flintlock ONLY Muzzleloader season, that single "buck" tag you get with your over-the-counter license becomes an either sex tag for the late Flintlock season.
In addition to your license, you must purchase a muzzleloader permit too in order to hunt with a smoker.
Being a Pa native and hunting there for 30+ years, it seems easy to understand for me. However, I can see how it is complicated for a guy buying his first Pa license.