The phrase "people helped" doesn't concisely convey what you described above because it appears without context. If you change the order of the stats, it may become a bit less ambiguous. Try switching the order to: "60 questions, 195 answers, 207k people helped." That's a bit clearer.
But this is about "reach". You should say their contributions have reached 207,000 people.
If you add a bit more context to the stats (below), it will also be a bit easier to understand. The presentation should look something like this:
I really like that last section. It drives home the ideas that these posts are reaching people outside the membership of this site.
If the example above is too wordy (or if you prefer the "helped {x} people" motif), I have a few other versions I was playing with. Maybe you can mix and match:
These posts have helped
#~207,000 people~207,000
people searching this site
Or something that works when viewed in the context of the screencap above:
Has helped #~207,000 people
~207,000
people through this site.
Hopefully between them you have something that better conveys the sentiment you are driving towards.