One 100 g serving of mcdonald's, sausage biscuit has 376 calories, 27.2 g of carbs, and 1.2 g of fiber.
Full macro and micronutrient breakdown, plus how this compares across diets, is on the McDONALD'S, Sausage Biscuit nutrition facts page.
Source: USDA FoodData Central - SR Legacy (2018-04)