I’m going to guess: the question is, how many Discourse instances running in each country.
I think it’s a difficult question to answer: For example, I run one Discourse on a .com domain, and one on a .org domain. One is physically hosted in the USA, one in Germany. One has international membership, the other has a UK membership. In total there might be just 100 active users - but some instances have very much larger memberships!
Another question you might ask, is how many Discourse instances are using each language translation. Mine are both English language. I think there might be nearly 50 languages supported (but only 15 translations are 90% complete or better.)