One 100 g serving of mcdonald's, strawberry sundae has 158 calories, 28.1 g of carbs, and 0 g of fiber.
Full macro and micronutrient breakdown, plus how this compares across diets, is on the McDONALD'S, Strawberry Sundae nutrition facts page.
Source: USDA FoodData Central - SR Legacy (2018-04)