Most Jews don’t believe in a Messiah and think it’s an archaic belief.
For so many contemporary Jews, though, traditional notions of a Messiah (Moshiach) and future Redemption have become archaic and vaguely embarrassing notions, even though they are woven throughout the daily prayers, the Bible and rabbinic texts.
In the modern world, Reform Judaism has long denied that there will be an individual messiah who will carry out the task of perfecting the world. Instead, the movement speaks of a future world in which human efforts, not a divinely sent messenger, will bring about a utopian age.
If any Jew would believe in a personal messiah, it would be the Orthodox Jews.
Orthodox Judaism, therefore, advocates a strict observance of Jewish law, or halakha, which is to be interpreted and determined exclusively according to traditional methods and in adherence to the continuum of received precedent through the ages. It regards the entire halakhic system as ultimately grounded in immutable revelation, essentially beyond external influence. Key practices are observing the Sabbath, eating kosher, and Torah study. Key doctrines include a future Messiah who will restore Jewish practice by building the temple in Jerusalem and gathering all the Jews to Israel, belief in a future bodily resurrection of the dead, divine reward and punishment for the righteous and the sinners.
Even among the Orthodox Jews, there is not a widely held belief in a personal messiah. Orthodox Judaism is divided between the Haredi (ultra-Orthodox) and the Modern Orthodox.
Modern Orthodox emphasizes the nation of Israel and would lean towards a nationalistic messiah than a personal messiah.
Modern Orthodoxy also assigns a central role to the “People of Israel”. Here two characteristics are manifest: in general, Modern Orthodoxy places a high national, as well as religious, significance on the State of Israel, and institutions and individuals are, typically, Zionist in orientation;
In the US, Orthodox Jews is a minority among the Jews.
The National Jewish Population Survey of 1990 asked 4.5 million adult Jews to identify their denomination. The national total showed 38% were affiliated with the Reform tradition, 35% were Conservative, 6% were Orthodox, 1% were Reconstructionists, 10% linked themselves to some other tradition, and 10% said they are “just Jewish.”
In 2013, Pew Research’s Jewish population survey found that 35% of American Jews identified as Reform, 18% as Conservative, 10% as Orthodox, 6% who identified with other sects, and 30% did not identify with a denomination.
A follow-up survey in 2013 showed that 14% of all Jews were actually affiliated with Reform communities, 11% with Conservative, 10% with Orthodox communities and 3% with other communities.
So, many Jews do not believe in a personal Messiah.