Question

There isn’t/aren’t much/many broccoli

Answer 1

There isn’t much much broccoli

Answer 2

The correct sentence is: "There isn't much broccoli."

In this sentence, "isn't" is used because "broccoli" is an uncountable noun, and "much" is used to quantify uncountable nouns. If you were talking about countable nouns, you would use "aren't" with "many," for example: "There aren't many carrots."