Black holes themselves are not a danger to Earth. However, if a black hole were to pass close to Earth, it could potentially have an effect on the orbits of celestial objects in our solar system. It is highly unlikely that a black hole would come close enough to Earth to have any noticeable effects, as the distances between celestial objects in our solar system are vast and black holes are relatively rare.
It is also important to note that there are different types of black holes, and the type of black hole that is most commonly discussed in relation to Earth is a supermassive black hole, which has a mass that is millions of times greater than that of the Sun. Supermassive black holes are typically found at the centers of galaxies and are not considered to be a danger to Earth.