Does this bumper have fog light cutouts?

No. This is a solid cover. If your vehicle came with factory fog lights, you'll need to create openings and verify clearance before painting and install.

Will I have issues with bumper sensor holes?

This cover does not include factory sensor ports. If your car has parking sensors or collision detection hardware, you'll need to drill and route those openings to match your OEM setup before installation.

Can I use this with the factory lower valance?

Compatibility depends on your bumper beam and valance fitment. Check that existing mounting points align with the cover before final installation. Some valance trimming or repositioning may be necessary.