I never use this myself but I have a friend who uses score a lot and I know he has wondered about this as well. In case one only wants maybe a couple of pages it would be obvious to use the camera tool except it only seems to be able to do one page at the time. For the entire score you can do what Sascha suggested but not for ie page 3-5 as far as I know.
I use the print to PDF feature all the time. In fact, at least on my HP printer, the pages print appreciably faster from the PDF file than from Logic. So anytime I have to print more than a page, I'll go to PDF. As Sascha mentions, you can select your page range.