Which Arabs and Muslims and which Jews are you referring to? Throughout the world where Arabs, Muslims and Jews are living as minorities in Christian populated countries, they tend to be allies on shared interests and concerns such as the promotion of religious literacy and the fight against anti-Semitism and Islamophobia. Muslims and Jews are also often allied on questions of social justice.
Where Jews live today as minorities in Muslim majority countries, such as Iran, the views are mixed. Some say they live in harmony with their Muslim compatriots, and others say that Jews are discriminated against.
And historically, Jews and Muslims generally lived in harmony in many Muslim-populated countries, such as Morocco, Iraq, and Egypt (and, at least until the mass migration of Jews to Palestine in the early 1900s, in Palestine itself). Jews refer to Muslim rule in Spain in their history books as a period of renaissance for Jewish life. During the Spanish Inquisition, when both Muslims and Jews in Spain were forced to convert or leave, many Jews fled to Muslim countries where they lived for centuries in security and prosperity. These Muslim countries, with rare and short-lived exceptions, never propagated the anti-Jewish sentiment that resulted in pogroms and other forms of persecution known in Europe.
If the question is about the conflict between Palestinians and Israelis, then this is a recent conflict which began with the twentieth-century mass settlement of Jews in Palestine, and the subsequent creation of the state of Israel. In the eyes of most Muslims, this is less about religion than about the displacement and dispossession of many Palestinians, both Muslim and Christian, as the state of Israel was formed, which is why Christian Palestinians such as Hanan Ashrawi have been active about this issue.
It must be understood, however, that most Jews have a different view of Israel’s birth; the different narratives accepted by both sides are part of the challenge of bringing peace to the area.