I am using the Authorized (King James) Version. (So there's no Malta, as it is called "Melita" in Acts 28:1 in that translation.)
Note that I am counting strings of letters found together (ignoring spaces and punctuation), which make a modern country name (as used in English), not just when intended as an actual country name. Such letters, when found in the Bible, may or may not be parts of the same word... So for example, the phrase "make Ammon a country" is not found in the Bible, but if it were there, Monaco would count!
Macedonia is no longer qualified to be in the list, as it was renamed "North Macedonia" in 2019.
Please let me know if you can think of any I missed...