I would choose plural. " I think it would have to be understood as "much time and much money," and therefore plural. ), as in "Much is often made of the controversy surrounding his birth cirtificate," but I don't believe that's what's happening here.
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YankeeThe collocation "time and money" is quite commonly used, and I'd say it's no problem to view it as a single unit, particularly in combination with the word "much" and also because the word "much" was not repeated. To me, "much time and money is spent" could be compared to "much peanut butter and jelly is eaten".
Sometimes compound subjects are governed by a sense of unity and by notional agreement take a singular verb: My name and address is printed on the box. His colleague and friend (one person) deserves equal credit. This sense of unity is not si