I read it a long time ago, but essentially it was about high school students in a club who played competitive trivia, where they would try to answer trivia questions as quickly as possible, often by hitting the buzzer before the announcer finished the question and guessing the answer based on the stem of the question.
It was written like a classic shonen sports manga, and I think the main character was the typical slightly wimpy guy, and the girl was really good at the trivia stuff.

Thanks in advance!!

Searching for "quiz" in Categories gave me Nanamaru Sanbatsu(and 5 others) as a result which sounds like it might be what you are looking for...

~4400 manga completed
~1700 ongoing...

yes that's the one thank you so much!!