For the record, there is a 2020 ddo variety listed on wexler on the date, however its very minor and very difficult to spot and compare. On the one photo, it does look like there may be some extra thickness on the date, but as I said its tough to compare. But either way, the doubling would be so insignificant that it wouldn't carry much of a premium at all.
A good example of a modern doubled die obverse is the coin in my profile pick. I found that 2019 ddo last year