There's no way to make your nails grow overnight because it just takes time.
Fingernails take at least 6 months to grow back and toenails take at least 18 months to grow back.
However you can use olive oil to help speed up the process and promote the growth of the fingernails but it won't happen overnight.
Take some olive oil and massage the olive oil into your nails and cuticles and then wear some gloves overnight.
You can also soak your nails in warm olive oil for 15 minutes everyday.