Don't believe you can. I think Holes are the only feature that use the automated feature count.
You can format a callout to show quantity using "parts list quantity" under graphic connection.
Absolutely Yes. These parameters will be available in Variable table. You have to toggle on it and that's all.
Here is a video:
But this only will work for curved patterns directly and only if there are no suppressed occurrences for that pattern.
I assumed that the initial request more goes into the direction of knowing how many active pattern instances there are.
I think my answer above was mismarked as the solution. It seems like @Imics' post should be the solution.
Upon rereading this thread I realized I goofed and interpreted the question as an assembly drawing issue when it was actually a part drawing issue.
Can you double check @MagRiz?