If you just wanna remove the grill.
pop up your hood,
you should see three screws or nuts sitting on top of your grill, unscrew or losen them, and then you gotta craw under, you should see two more screws or nuts under the bumper. unscrew those. Your grill could be remove.
if you want to remove
you gotta do one more step, you have to remove the bolt on each side where the bumper attaches to the fender. I think you have to remove the fender liner too.
but just play around with it, should be fine.
good luck