Hard to tell from the photos, but the first thing I would do is determine whether they are just deep scratches in the paint or if the bumper was actually damaged. If the former, go with a mobile auto paint shop. They do amazing work on prepping and mixing paint to get the color just right. We had some deep scratches in our rear bumper due to a hit and run in a parking lot. The mobile auto paint shop came out and performed some magic to make it look as new. Couple hundred bucks.