Indeed, hard to know exactly what you are asking. best when asking for help to attach the score you are working on and describe as precisely as you can what you are wanting to make happen.

ato add a *blank* page, see the vertical frame suggestion above.

To add pages with music on them, simply add the music - the pages take care of themselves, just like in a word processor. You don't normally need to ask Microsoft Word to give you more pages, you just type more words and pages get created as needed. If you need more *measures* to enter notes into *something that has no analogue in a word processor), use Add / Measures.

If you already have the music entered but you want to split it up over more pages, add a page break from the Breaks & Spacers menu (again, similar to what you'd do in a word processor).