> Do you know what's the count?

No one does. https://www.bbc.com/future/article/20190725-will-we-ever-kno... and we did not take advantage of the event to get better data.

And were not done at that site. It looks like they are going to have to replace the whole New Safe Containment structure. https://world-nuclear-news.org/articles/chernobyl-protective...

No one is in a rush to do that.

Chernobyl is going to be a problem on a time scale that most people can not comprehend. It already requires a "atomic priesthood" kind of outlook... https://www.zygonjournal.org/article/id/14327/