The number of stars in the night sky is incredibly vast and difficult to estimate precisely. In the observable universe, there are estimated to be more than 2 trillion galaxies, each containing billions to trillions of stars. This would result in an astronomical number of stars.
To give you a very rough estimate, there are thought to be about 100 to 200 billion stars in our Milky Way galaxy alone. And there are many, many galaxies in the observable universe. So, the total number of stars in the observable universe is likely in the hundreds of billions of trillions, or possibly even more. However, it's essential to understand that this is a rough estimate, and the actual number could be much higher.
The true number of stars in the universe is still a subject of ongoing research and exploration as astronomers continue to discover and study more celestial objects.