Friday, Feb. 21 Epic scales! You know what Brooklyn needs more of? Dinosaurs! Fortunately, “Jurassic World Live Tourâ€� is here all weekend, with puppeteers sending more than 20 thunder lizards stomping all over the Barclays Center stage. There is some sort of plot about evil scientists exploiting a super-smart dino, but we just want to hear that T-Rex roar! 11 am, 3 pm, and 7 pm at Barclays Center 620 Atlantic Ave. at Pacific Street in Prospect Heights, (917) 618–6100, barclayscenter.com. $15–$100. Saturday morning, Feb. 22 Rushin’ bots Watch teams of Brooklyn kids pit their metal minions against each other …