Well' if while you were driving, you could of somehow had your ear right up against the engine,,,,
Then,,,you might have heard the belt break followed by the high pitched squeal of bending steel.
You have what is called an " Interference engine " .
In an interference engine, when the timing belt breaks, the piston can and will hit an intake or exhaust valve.
This can result in damage to the piston and to the valve,,or pistons and valves,,
The only way to be sure,,exactly what type of damage would be to pretty much disassemble the entire engine,,measure everything,,then rebuild or replace the damaged components.
In this case, it usually is cheaper to buy a rebuilt or new engine as an replacement.
Between you and me,,i've never owned a car with a timing belt,,i've only owned cars with timing chains,,,and i've never had a chain ever break,,plus the chain never needs to be replaced.
That last sentence may be some advice for your next car.