meteors fall to earth

The 6 largest meteorite blocks are detected on the surface of the Earth
most of the meteorites that have fallen on our planet have been going on for a long time. until it was found by humans, it dates back thousands of years. thankfully, most of them are small rocks except for giant meteorites that have caused great extinction on earth 63 million years ago.
What happens if meteorites fall into the ocean?
according to calculations by scientists, in 2036, a meteorite named apophis with a diameter of 270m may fall into the pacific ocean. so then, what will happen?