Depending on your perspective, it's either quite a few or none at all.
Jewish law forbids worshiping of idols and such, so there aren't specific objects which are scared in that sense.
However, the entire city is filled with places and objects from ancient Jewish history, some of them considered to be sacred. Actually, the whole country is.
The most sacred within the city itself would be the Temple Mount. It's the location of the original Temple (which, over the centuries, was built, destroyed, rebuilt on the same site, and destroyed again). The Temple was the central place of worship for the entire religion. At least once a year, a member of every Jewish family would come there for prayers and ritual sacrifice. (Since the sacrifice was only conducted at the Temple, it is no longer practiced, and will not be until such time as the Temple is rebuilt again. There are many legends about what will happen if and when it is.)
Other important buildings have occupied that location. The Dome of the Rock, the most sacred Muslim mosque (which has also been destroyed and rebuilt over the centuries), is standing there now, and has been for quite some time.
All that's left of the original Jewish Temple is the Western Wall (what was once part of the outer wall surrounding the Temple), now also known as the Wailing Wall. Jews still make pilgrimages there to pray and to leave written prayers/wishes in the cracks.
Judaism is not a sacred text, it is a religion and that religion happens to have a sacred text. To learn more about Judaism's Sacred Text, read the Related Question.
bananas
Judaism has no sacred people. All people are equal in God's eyes. There are different classes of people in Judaism; Cohen - priests, Levites and regular Israelites.
No. The cow is the sacred animal in Hinduism, not Judaism.
The equivalent sacred text in Islam to the Torah in Judaism is the Quran.
The Torah
Mecca
Judaism accepts parts of the Christian Bible as sacred, but treats the entire Jewish Bible as sacred.
Judaism
No. The sacred writing of Judaism is the Bible, also called the Tanakh. The Vedas are one of several Hindu Holy Books.
What is sacred to both are the Torah, Psalms, and the Old City of Jerusalem.
The Old Testament is sacred to Judaism