Judaism accepts parts of the Christian Bible as sacred, but treats the entire Jewish Bible as sacred.
The Old Testament is primarily based on the religion of Judaism, which is the oldest monotheistic religion. It contains the sacred scriptures of Judaism and is also a part of the Christian Bible.
The sacred book of Judaism is the Tanach - the Jewish Bible. The word Tanach is an acronym made up of the names of its three sections: Torah (Teachings), Nevi'im (Prophets), K'tuvim (Writings).
There is only one sacred text, the Hebrew Bible, of which the Torah is a part. There are several other writings of religious significance, such as the Talmud and Mishnah (writings of ancient rabbis). Only the Hebrew Bible is considered sacred by most Jews.
The most sacred part is the Torah, which is the first 5 books of the Hebrew Bible.
The Western Wall is particularly sacred to the JUDAISM, the religion of the Jews.However, the general Temple Mount site, of which the Western Wall is just a part, is holy to Judaism, Christianity, and Islam.
Christianity and Judaism share all of the old testament books.
Both Judaism and Christianity consider the Hebrew Bible to be part of their sacred scriptures. Islam believes that the Hebrew Bible is the writings of the prophets of God but that the Koran is the ultimate prophecy given by God.
The old testament
Basically any other religion besides Christianity, Judaism and Islam since all three religions believe in the first part (the old testament) and once you get to the second part that's when the beliefs divide.
The Apochrypha has been a part of the Catholic Bible since the earliest days. The question should be 'Why did the Protestants not accept the Apochrypha' when it had been a part of the Bible for 1500 years.
The Holy Bible for Christianity and the Tanakh for Judaism. The Tanakh is also the first part of the Holy Bible. Both of those are inspired from God.
Judaism and Christianity have the bulk of the old testament in common. However Islam draws some of its source material from biblical stories but re-interprets it, so it does not have anything in common in terms of the bible.