My personal preference is to make biscuits right before you plan to serve them. There's nothing better than warm, freshly baked biscuits. While it's certainly possible to store them for a day or two, they'll never be quite as good as they were freshly baked. If you need to make them in advance, or simply want to store leftover biscuits for later, wrap them in plastic wrap or store them in a zip top bag or other air tight container at room temperature for up to 2 days.  To reheat biscuits, set them on a baking sheet and place them in a 350 degree oven for 5 - 7 minutes. Brush them with a bit of melted butter before serving.