Was just my email exposed to some more spam? Not so bad.
That was one of the items possibly leaked.
Was my password exposed? That would suck as I hate remembering new ones but I use a different one for every site.
That was not one of the items leaked, at least Apple claims not.
Was my credit card exposed along with bits like the code on the back? That would suck but again I use a crap card for online stuff.
That was definitely not one of the items leaked as any developer purchases go through the App Store framework, which was not breached.
Were my private app keys exposed which then probably opens my app to piracy? That would suck too.
There's really not anything anyone could do with these though. Apps can be pirated already without any of that information if you use a jailbroken phone, because it can be made not to check the application signing.
You also can't build new enterprise apps locally to phish companies, because that requires a private key that is only held client side, Apple does not have it.
Also Apple is not saying that was one of the items potentially leaked.
Was my banking information exposed.
Apple is not saying that's any of the data exposed, and the system that holds that (iTunes Connect) is not offline.
Was all my contact info exposed?
Again, possibly your email address and phone in encrypted form were taken... but anyone could find those out in other ways anyway.