Preheat oven to 450 degrees.
Add the flour, Bisquick, baking powder, sugar, salt, and baking soda to a large mixing bowl. Stir well to combine the dry ingredients thoroughly.
Add two tablespoons of the butter to the dough and use a spoon to press it into the flour mixture. I find it easiest to smear the butter against the sides of the bowl while working it into the flour. Once the first two tablespoons are completely incorporated, add in the last two tablespoons and repeat the process.
Pour in the milk and stir with a spoon until just combined. The dough will likely be too wet. Add in more flour, one tablespoon at a time, until the dough is just dry enough to handle. Dough should come away clean from your fingers when you touch it, but stick to your fingers if you pinch it.
Add the blueberries to the dough and gently fold them in, being careful not to break up the berries too much.
Dump dough onto a well floured work surface. Sprinkle lightly with flour.
Fold dough over on itself three times.
Use your hands to pat the dough to 3/4 of an inch high.
Cut dough out with biscuit cutter and place on baking sheet. Rework the dough as needed to cut out all of the dough, making 10 biscuits. Let sit 5 minutes before baking.
Bake for 15 minutes or until tops are just beginning to turn golden. Do not overbake.