Depending on the damage and your car’s make, model, manufacture year, and the auto shop you bring it to for the repair, how much to fix a broken bumper can be anywhere from $50 to $600.
If the damage is severe enough that you need a bumper replacement, it could cost as much as $800 to $2000. It doesn’t sound like that’s the case in your situation, but it’s good to keep in mind if you encounter serious bumper damage in the future.