My son 2 year and half ,he is counting from 1 to 100 and also can read any number from 1 to 100 . I

my son 2 year and half ,he is counting from 1 to 100 and also can read any number from 1 to 100 . I am realy wonder about his ability to count numbers,is that a sign he is so clever or its normal in this age?

That's very unusual for his age. Typically children count to ten and recognize numbers zero to ten at about four years old.

Yeah, he sounds very bright. Definitely encourage him to grow and learn, but avoid puting too much pressure on him.