I don’t remember my SAT score either, but I did attend a school with one of the highest average scores. So I assume I did ok. Nor do I remember my GRE scores. Come to think of it, I don’t remember any of my previous phone numbers either. I don’t really need to remember these things.
I’m also not sure comparison with today’s scores would be very meaningful. Concordance doesn’t mean equivalence. Scores becomes increasingly compressed at the top of range with each redesign, a wide range of scores from the old days would be indifferentiable today.