Here's the corrected version with the proper use of "much," "many," and "a lot of":
How much sugar have we got?
How many apples do we need?
How many sandwiches do you want?
There is a lot of cheese.
We've got a lot of cookies. Help yourself!
There is a lot of ice cream. Enough for everybody.
We haven't got much olive oil.
I haven't got many egg sandwiches. Only two.
How many tomatoes do you eat every day?