Word Processor App Where You Can Share Documents With Anyone?

I'm not exactly clear how you're thinking of this, Misty Dawn. If you create a document in pages, you can export it to a file format, such as Epub or RTF, then in one way or another, like email, transfer that file to someone else. They can then open the document in a web browser for Epub, or an editor for RTF.
On the other hand, you can have a file on a cloud service such as Dropbox, set the file to be viewable by people other than yourself, there's a couple of ways it might be done, then share a link to that file to other people to look at on their devices. You might even be able to copy and paste your document with the links, say you made the document in the Notes app, directly into an email, and if their email viewer is set up to show web addresses as links, they should be able to click or tap on a link and their device will deal with it. Part of it will be on their end in these situations.