What happens right after I upload?

The note becomes a public page immediately, at wegrownepal.com and in the app. Your followers are notified. The search engines are told the page exists rather than waiting to find it, so it can be indexed within hours rather than weeks.

The screen also offers to share it, which is worth doing — a brand new page has nothing linking to it, and one share into a class group is what turns it from a URL into a page with readers.