not sure i understand clearly . . .
Is this a car you're looking to buy?
By valve job, do you mean like performance regrind / reseating etc. or just adjusting the valves?
When a timing belt breaks on an E30, the valves don't move in sync with the pistons, which means the pistons will smash into the valves. Valves will be bent, holes in pistons, etc. Car won't run.
Maybe the previous owner had the valve job after the belt break as a repair?
The oil and inspection lights are just reminders to change the oil and have an inspection done on the car. They can be reset. I guess it means the the previous owner was too cheap to do the maintenance, or did it and did not reset the lights.