According to NASA, the length of the celestial object is 366 meters. The distance from 387746 (2003 MH4) to the planet Earth will be 6,676,580 km.

If an asteroid approaches the Earth at a distance closer than 7.5 million kilometers and its size exceeds 150 meters, NASA considers it a “potentially hazardous object.”

So there is basically no chance of impact as I understand it unless some suuuuuuuuper unexpected shit happens I guess.