Depends what damage (if any) has been caused behind the bumper.
eg, the slam panel, aircon rad, engine rad, crash bar, crash sensors.
A good panel beater would straighten that bonnet. New bumper, headlight, etc.
that'll be a write off, that age and mileage probably means value around 2.5k, replace bumber, bonnet, grill, headlamp, paint and labour will be enough to kill it. unless insurance company can source 2nd hand parts of same colour, unlikely.