When I hop on Zoom with Quincy Wilson, the teenage track phenom is enjoying a rare day off at home — the first of his two snow days, a treat at Maryland high schools. It’s a much-deserved break for the 18-year-old record-breaking athlete, who just returned from the Indoor Grand Prix in Boston this past weekend. The weekend before that, he was in Virginia Beach at the VA Showcase, where he ran the second-fastest 500-meter in high school history.