The answer is too many to count. But I can confirm it's more than 1 drop of water. If I were to estimate it would be more than 200 trillion drops of water.
There is an estimated 1.332 billion cubic kilometers of sea on Earth and 0.05 ml of water in a drop, so the ocean is equivalent to 2.664 × 10^25 drops or 26,640,000,000,000,000,000,000,000.