Every sport has its particular scoring. For more information on other sports, check out the MISC section on our rules page.
NASCAR is graded based on the standing order at the end of the race, any penalties assessed during inspection or after the race concludes will not be factored into the grading of the race. For example, if Denny Hamlin has a finishing projection of 3.5 and he finishes in second place, people that selected "lower" would win those selections because 2 is lower than 3.5.