Corona Borealis, the Northern Crown, is a small constellation, and it doesn't have a large number of bright stars. There are no stars in Corona Borealis that are brighter than 4th magnitude.

However, it's important to note that:

* The number of stars visible depends on the observer's location and the light pollution in the sky.

* Many faint stars are present in the constellation, but are not easily visible to the naked eye.

While it's difficult to give a definitive answer to the number of stars in Corona Borealis, it's generally considered to have a small number of prominent stars.