The Bible is silent about what Jesus was doing between 12-30 years of age. However, he probably learned the trade of carpentry from his stepfather, Joseph, as was the custom in those days.
He also did not permit himself to stand out and perform miracles. If he had, he would have become famous and attracted a following of men. There are absolutely no historical nor scriptural documentations of Jesus performing miracles as a child. Changing the water into wine at the wedding of Cana was Jesus’s first miracle. “This beginning of miracles did Jesus in Cana of Galilee,” John 2:11. Instead, it is likely he quietly went about doing carpentry and fulfilling the responsibilities of the oldest son.
Additionally, Jesus lived and stayed in Nazareth. He was identified by the people as, “This is Jesus, the prophet from Nazareth of Galilee,” Matthew 21:11.
There are some apocryphal accounts of Jesus’s childhood. But these are unsupported and do not harmonize with the Gospel accounts of Jesus’s life.