Yeah, this is my first time doing a TV script and I'm writing a pilot, but I was wondering how many pages each of the acts should be in an hour-long show?

I would find a show you want a similar feel to (i.e. your inspiration, or something you just particularly like the timing of), look at a script, and see how it pans out. My Act 1 goes from age 3 through page 16/17 (can't remember atm), a decision based heavily on the fact that that's about how long Act 1 of the House script I've been checking my formatting against is.