The first sentence is correct, but the second sentence is wrong because it lacks the auxiliary verb do.

When asking about price in the how much sentence pattern, the uncountable noun money in how much money is often omitted and becomes a how much structure. But after that, it is obvious that it is a special interrogative structure, that is, it must be in the format of: special interrogative word how much + general interrogative sentence. This general question must have the auxiliary verb do or does.

To sum up, the first sentence "how much money do you have?" is the correct statement.