Total Word Count is zero

Hi. I’m using Scrivener on my iPhone (and iPad, but right now the phone). I want Scrivener to give me a total word count. So I tapped on the word count in one of my Draft documents, which gives me the target wheel. So I set a target of 100K words. It says I’ve got zero. There are about 15K in my DRAFT … folder, is it? Maybe I don’t understand Scrivener’s organization. Can someone set me straight?