How to Make It
Heat oven to 400° F. Whisk together the flour, baking powder, baking soda, salt, and ¼ cup of the sugar in a large bowl. Add the butter and lemon zest. Blend with a pastry blender or your fingers until crumbly. Add the milk and stir until just combined (do not overmix).
Drop 8 large mounds of the dough (about ½ cup each) 1 inch apart on a baking sheet. Brush with 2 tablespoons of the heavy cream and sprinkle with 2 tablespoons of the sugar. Bake, rotating the baking sheet halfway through, until golden, 18 to 20 minutes. Transfer to a wire rack to cool completely.
Meanwhile, in another large bowl, toss the strawberries with the vanilla, lemon juice, and the remaining ¼ cup of sugar. Let sit, tossing occasionally, for at least 30 minutes.
Beat the remaining 1½ cups of heavy cream with an electric mixer until soft peaks form, 1 to 2 minutes. Split the biscuits. Top each bottom with strawberries and juices, ice cream, whipped cream, and a biscuit top.