Great question! Asteroids hit the Earth all the time. Sometimes, asteroids can be small rocks the size of a palm and are rarely really noticed by NASA or humans. However, we've also had some scary encounters too like with the case of the Chelyabinsk meteor that hit a remote part of Russia in 2013.
The next big, dangerous meteor with similar magnitude to the one that killed all dinosaurs will not be due for another thousand, million years, way out of our lifetime, so it's the least of our concerns.
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The Goldstone radar observed Apophis March 3–11, 2021, helping to refine the orbit again, and on March 25, 2021, the Jet Propulsion Laboratory announced that Apophis has no chance of impacting Earth in the next 100 years.
