For a VLN - you would do likely 3 or 4 laps on Friday PM practise, 2 laps in quali on Saturday AM, and 9 race laps each (with a team of 3).
In a 24h you would like to 6 laps in practise/quali, and then likely 30-35 laps each (with a team of 4). In one of the 24's I did the start, the finish and 46 race laps (with a team of 3).
So in a race car - excluding track days etc. I've done 45 x 15 + 5 x 40 = 875 laps.
Before I started racing (2005) I reckoned I'd done about 2,500 laps in TF, and track days etc. I first drove the Nordschleife in July 1995. So I reckon in total I'm well over 3,000 laps.
That's more than some, and less than others.