When do Jews believe or expect the Messiah to arrive or come?

There is no specific date or time set for the arrival of the Messiah in Jewish beliefs. The exact timing of the Messiah's coming is considered unknown and left to divine will. However, Jewish teachings emphasize the importance of preparing for the Messianic age by adhering to the principles of justice, righteousness, and compassion, as well as performing good deeds and following the commandments outlined in the Torah.
Throughout history, some Jewish scholars, mystics, and leaders have speculated on the possible arrival of the Messiah or interpreted certain events as signs of the impending Messianic age. However, there has been no consensus on the exact timing of the Messiah's arrival, and no individual has been universally accepted as the Messiah by the Jewish community.
It is important to remember that views on the Messiah and the Messianic age can differ among Jewish denominations and individuals. While some may await the arrival of the Messiah more actively, others might focus on the more immediate concerns of living a just and ethical life.