Muslims believe that Jesus is one of God's five most important messengers
Jesus son of Mary was a human being who was born by a miracle from God, from a mother without a father
He received the Gospel (Al-Injeel) from God, a divine revelation to guide believers to God's Path, which confirmed the earlier revelation God sent to Moses (The Torah) ...
Muslims believe that Jesus foretold of a prophet after him, Muhammad peace be upon him
All of God's prophets from Noah to Muhammad preached the same faith, Monotheism, the belief in the One and Only Creator and Sustainer of the universe
As sister Sahar said, Muslims believe in all of God's prophets mentioned in the Qur'an that God sent to guide humanity throughout history, in addition to the other prophets not mentioned in the Qur'an
Jesus is mentioned tens of times in the Qur'an and we don't doubt his existence