The scenario you're describing, where something comes out of a black hole and destroys our universe, falls into the realm of speculation and hypothetical scenarios that go beyond our current scientific understanding. Our understanding of black holes is based on general relativity, but the behavior of matter and energy within a black hole's event horizon is still an active area of research and theoretical exploration.
It's important to note that black holes are incredibly dense objects with gravitational forces so strong that not even light can escape from them within a certain boundary called the event horizon. This means that any information or matter that crosses the event horizon is effectively cut off from our observable universe.
Speculating on what might happen if something were to come out of a black hole is purely hypothetical. Since our understanding of the physics involved breaks down near the singularity within a black hole, it's difficult to make concrete statements about the consequences of such a scenario.
However, it is worth mentioning that the current scientific understanding suggests that matter and energy entering a black hole would likely be crushed and compressed to a singularity at its core. The concept of something coming out of a black hole and causing destruction in our universe is largely speculative and falls outside the bounds of our current knowledge.
Ultimately, we should approach such speculative scenarios with caution, as they often lie in the realm of science fiction or imaginative thought experiments rather than established scientific theories.