Judaism is strictly monotheistic meaning it has one G-d.
They prefer to be called "Jews" today, and they believe in 1 God.
The answer is one God.
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No. Unlike many other nations, the Israelites did not deify their kings. See also the Related Links.Link: What do Jews believe about God?Link: More about the Kings
They believe in many gods.
No. It was normal for the ancients to have many gods, and the Israelites were not different in that respect. If there is anything unique about the Hebrew people it is the Bible, but that was written among the people of Judah, long after the destruction of Israel.
They have many, many gods.
As with any country with so many religions it depends on the person you ask. Many people believe in many gods, many believe in none and many believe in the Western Gods.
Some believe in certain gods, some believe in other gods, some believe in no gods, some believe in all the gods.
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people that believe in many gods