Why do you say that?
No churches fell in the Garden of Eden and needed redemption. Only people did that.
Now you can ask how many souls were purchased by Christ's sacrifice (you'd need a pen, paper and calculator for that).
Now if you asked me how many churches there are supposed to be, I'd say one, if you mean capital "C" Church as in Body of Christ. If you mean small "c" church, as in congregations, well, the New Testament recognizes numerous churches.