How do the 600 extra CRS points work after a nomination?

If you receive a nomination through an Express Entry-aligned stream, you accept it inside your Express Entry profile, and 600 points are added to your CRS score. Because 600 points is more than any other factor, this generally places you high enough to receive an invitation to apply in a following draw. Remember, though: the invitation and even the nomination are not guaranteed PR — IRCC still checks medical, security, and admissibility before making a final decision.