That fund affects day to day life a lot less than you might expect, FWIW. It's not like we get to just... spend that; it's somewhat comparable to saying "the New York Stock Exchange contains over $foobar dollars per citizen" (although of course the fund isn't managed at all like a stock exchange, either).
The most direct influence I've seen of the oil fund is that it provides capital behind some investments systems that are aimed to drive business creation in _non_-oil sectors (including technology).