I have two accounts in two different instances, in the past of the days I’ve added lots of communities in both of them, but both are very similar, will this script override one to another like copying files from one folder to another or how does this works exactly?

My goal is to have them synced, so I’d copy from A) to B) and then B) to A) to have the same amount of communities, BTW, is there any way to know the exact number of how many communities I’m subscribed to?