Light assembly question

Hey guys been a while, real life been going rather crummy of late, had less time for car issues than I would like.

Yesterday I was rear ended by a bronco, one of those huge ones with the chassis way off the ground on large tires, his bumped smashed my boot up rather badly and also shattered the left tail light bulb (assembly?) area.

Whats the cheapest way to get a light back in there so the car is legal to drive? Money is a big concern at the moment but i also must have the car running for work.

PS: No other problems in the last 4 months, I drove her on a round trip 1000 miles each way, while on holiday this summer and had no problems at all. (Except having my windshield smashed with a stray rock shot off a garbage truck )