01 - Combine strawberries, sugar, and lemon juice in a medium bowl. Stir gently to coat, cover, and let stand at room temperature for at least 20 minutes until berries release their juices.
02 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
03 - Whisk together flour, baking powder, baking soda, salt, and sugar in a large bowl until thoroughly combined.
04 - Add cold cubed butter to the flour mixture. Use a pastry cutter or your fingers to work butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized pieces remaining.
05 - Pour in cold buttermilk and stir with a spatula until just combined. Turn dough onto a lightly floured surface and gently pat into a 1-inch thick rectangle.
06 - Fold dough in half and pat out again to 1-inch thickness. Repeat this folding process twice more to build flaky layers.
07 - Use a 2.5-inch biscuit cutter to cut out 6 rounds. Place biscuits on the prepared baking sheet and brush tops with a small amount of buttermilk.
08 - Bake for 15 to 18 minutes until tops are golden brown. Transfer to a wire rack and let cool slightly.
09 - In a chilled bowl, beat heavy cream, powdered sugar, and vanilla extract with an electric mixer or whisk until soft peaks form.
10 - Split each biscuit in half horizontally. Place bottom halves on serving plates, top generously with macerated strawberries and their juices. Add a dollop of whipped cream and cover with biscuit tops. Serve immediately.