There is no "passing score" on the SAT. However, if you want to be competitive for admission to most colleges, you should aim for a total score of 1400 or higher. Some highly selective colleges only admit students with SAT scores of 1500 or higher.
To get a sense of what a particular score means, you can compare it to the average scores of students who were admitted to some of the nation's top colleges. For example, the average SAT score for admitted students at Harvard University is 1520, while the average SAT score for admitted students at Stanford University is 1500.
Remember, while your SAT score will not be the only determinant in your college admissions decision, it will play a significant role in your college admission decisions.