A 2021 Silverado front bumper costs about $300. Some custom aftermarket bumpers, though, can range as high as $3,000—but those are extremely high-end bumpers. Normal bumpers for the Silverado don’t often cost much more than $350, at most.
Once you’ve ordered your new bumper, it’s not a bad idea to install it yourself if you can. Paying a professional to install the bumper will likely cost you another $100-$300.