Total number of words in project

When I want to know the total number of words in my current project, I click on Project/Statistics. I just exported five chapters to a separate project file, to send to a reader. But when I do the same, to find out how many words there are in these five chapter, the total comes up zero. How do I get it to count the words.
Also, I’ve never been able to get the “Accurate (slower)” option to works.

It depends on how you do it. If you have scrivenings view and select the topmost draft folder you’ll see the total count at the bottom. Or if you use the outliner you can select to display the total count, including subfolders. That’s the way I usually do it.