A2
In negative sentences, "much" is used to say that there is not a large amount of something.
Dictionary examples:
I don't have much talent, but I have many excuses. (0.0)
I don't have much hair left, just five lonely strands. (0.0)
I don't have much luck with dates, only bad jokes. (0.0)
"Is there any wine left?" "Not much." (9.4)
She doesn't earn much money. (18.2)
Peter didn't say much in the meeting. (21.3)