I can sadly and unfortunately tell you that a majority of Jews actually do not believe in Jesus (Hebrew, "ישוע", "Yeshua"). In fact, Jews like me are often intraethnically persecuted (e.g., told that we're no longer Jewish or even that we're actually just gentiles posing as Jews in order to proselytize and destroy Jewish souls, thus attempting to finish the evil work of the Nazis). Also, I am quite sure that this answer may even be disliked and/or reported by Anti-Messianic Jews who will attempt to slanderously portray me as Anti Semitic.
However, many (if not most) Non-Messianic Jews are tolerant of Jesus-believing (Messianic) Jews (Jewish Christians), although they disagree with Messianic Jews on whether or not there is even a literal Messiah ("משיח", "Mashiach) and/or who Mashiach is. For example, Karaites and Orthodox Pharisees (and Ultra-Orthodox Pharisees) do believe in a literal, yet-to-come (or, in the case of Menachem Mendel Schneerson's followers, yet-to-be-resurrected) Mashiach. Conservative and Reform Pharisees generally do not believe in a literal Mashiach.
Some Non-Messianic Jews, and even some Messianic Jews, are Crypto Jews ("אנוסים", "Anusim"). Many direct paternal ancestors from the 1700s-1900s became or were born to such--in fact, my dad and his parents deny that we're Jewish because (long story short) dad's paternal granddad became an Anusi when he was a baby to survive the pogroms and escape Anti Semitism in better-than-nothing America, and my dad's Anusit maternal grandmother was partly responsible for the murder of her Non-Anusi relatives who died in the Holocaust (which, for Grandma, is pretty painful to recall--she was six to eight years of age when her mother denied Vilmos Rusznak, Zoli Grinfeld, and other cousins [z'l] financial help to leave Europe and make aliyah ["עליה"]. In fact, she once snapped at my mom, "You keep your money in your own country." when Mom unknowingly and unintentionally opened that painful and reminding wound that Great-Grandma left in her daughter's soul.).
Most Anusim were or (as are my grandparents) are Roman or Byzantine Vaticanists ("Catholics", "universalists")--partly because they're in dread of the Vatican, which attempted to supersede Mount Zion with Vatican Hill because of replacementism. Some Anusim (e.g., Issac D'Israeli and Heinrich Marx) were or are Lutheran, Anglican, or affiliated with other denominations that broke away from Vaticanism. Very few Anusim are affiliated with Anabaptist or other Non-Vaticanist denominations (Even my dad, who goes to a Southern Baptist church, goes to a Southern Baptist church only because his wife is a Southern Baptist. If he were not an Anusi, he'd be a Reform Jew.).
As for Vaticanists, be sadly assured that most are not Christians. Christians (including Jewish Christians) believe in the inerrancy and infallibility of the Christian/Completed Jewish Bible (Old and New Covenants/Testaments). Vaticanists generally do not, as they tend to either believe what the Vatican says about it (as opposed to what it says for itself) or the "Documentary Hypothesis" (e.g., Non-Messianic Jews--excepting Karaites, Orthodox Pharisees, and Ultra-Orthodox Pharisees--and Vaticanists alike would agree with the words of Reform Pharisee clergywoman Amy Scheinerman--i.e., "Some institutions are considered to be a product of the cultural milieu and societal norms of the ancient Near East when the Hebrew Scriptures [i.e., the Old Covenant] were written down, and do not speak to our lives today.")
Hopefully, this clears up any confusion and specifies differences as well as similarities for you.