Not in my town. I've asked.
If they do do it, they should publish the results. Given the ways that elections can be manipulated, why would you not be in favor of disclosing verifiable counts and cross checks? Or do you believe that elections cannot be manipulated? The fact is that many districts "find" boxes of ballots well after election day. There is no chain of custody. No explanation regarding why the count of outstanding ballots is being altered. Not to mention the bad voter rolls and no ID requirement to vote in many places.
As I said earlier, even if you don't tally the votes immediately, every counting facility should have a pretty close approximation of how many ballots it needs to count because they should know approximately how many fit into a container and how many containers they have. But even here, they should have an exact count rather than an approximation. I'm just giving them a little wiggle room. The Post Office can give them an exact count of ballots delivered to them and if they use drop boxes, the ballots should be counted as they are fed into the box. Or, if the box can't count on insert, manually counted as they are removed.
There are way too many districts around the country that cannot reconcile voters with ballots in the in-person locations which is separate from the mail-in problem.
Would you ever deliver an application that dealt with money or inventory or anything your client wanted to count that had fluid totals? I certainly wouldn't. Would you allow your bank to give you a statement that didn't balance? I once worked through a Christmas party going on around me with a co-worker as we tried to find a small discrepancy in an insurance premium application. The amount of the discrepancy was irrelevant. We needed to find out what caused it. We did find it and the discrepancy actually swung ~ $3,000 dollars (in our test data) but ended up netting to a $12.03 difference.