I promise, it’s the title that drew me in. Margo’s Got Money Troubles is a new Apple TV show (out Wednesday), starring Elle Fanning as a single mum who becomes an OnlyFans model. It joins a niche canon of similarly blunt titles about generic obstacles. To wit: Fleishman Is in Trouble; Big Trouble in Little China. Margo’s Got Money Troubles is better, though. Check out the assonance, the rhythm. It has great mouthfeel, to borrow a word from food reviewing, one I instantly regret.Our hero, Margo Millet, is a first-year college student who falls pregnant by her professor. The married…