Maybe the same as This is a good news. This is good news, or News for plural, but I found "I have two good news for you." in https://math.stackexchange.com/a/4780391/1230831, making me wonder: If "news" is (syntactically) plural-only (i.e.: there is no "new"), does it make any sense to count it?
Or more simple: Are there any such plural-only words that are used with a count?
I'm no native English speaker, but there seems to be exceptions for "pair", like in "a pair of trousers" (there is no "trowser"), "a pair of scissors" (plus probably some more I can't remember right now). Do exceptions for non-pairs exist, too?
I'm native German, and there it's different: We have "neu" (new), "etwas Neues" (something new, typically not countable), "Neuheit" (something new, countable), and "Neuigkeit" (news, countable). The difference between the last two is that the former is used for new (physical) things, while the latter is used for information (which has a singular and plural form in German).