Thank you for your kind attention. I was asking a question about the Apple Books app, not about sheet music. It is (or was) acceptable to print a copy of sheet music "for student or study purposes only", even if the copyright was still in effect (for churches, for instance).
There are many ways to get free copies of old sheet music, like the one you suggested. Website IMSLP, is one place, especially if the copyrights have run out.
I think you are telling me that the freedom to print something from an Apple book is according to the author of the book, not Apple.
Thanks, Jack