No way of us knowing how old Jesus is. Colossians 1:15 says he was the firstborn of creation, he was created by the Almighty God before all the other angels and before he created the earth. So only God and Jesus know how old he is.
We don't usually ascribe an age to dead people. We might say "so and so was x years old when he died" as several people above have. But, when your toes are turned up, they're turned up. You don't keep accruing years. Otherwise, we'd be paying Social Security to a lot of stiffs.
As God the Son, the Second Person of the Holy Trinity, he is eternal, had no beginning, and will have no end; in his humanity, as Jesus Christ, his traditional age at death was 33, but he rose from the dead (resurrected), and ascended back into Heaven, where he sits at God the Father's right hand, forever. I hope this helps to fully answer your question. Frank