Depending on the year and model of the attachment points are different.
Front and rear bumper removed along with the metal amps
Front bumper
To remove the front bumper, need to screw through the openings of the fog light the screws holding the amplifier to the bracket. Next, Unscrew the screws around the perimeter of the lower part (if any). Then release the fastener and wings. Depending on the year these will be either screws or slides.
Rear bumper