I know I was wrong. They barely interact with matter, but they aren't dark matter. What happens to neutrino in a black hole is still unknown because neutrinos interact with gravity as Drakkith said.
We know in order to escape a black hole you have to go >c speed. Neutrinos is a form of dark matter, so probably trillions go through a black hole every second, or the particle can't go through it and go into the black hole.