Generally speaking, if you want to pursue a computer science degree, there are some areas of math you should be good at. One of the most important areas is number theory, as well as probability. Other areas include statistics and basic algebra. Of course, you need to have an excellent command of basic math such as addition, subtraction, multiplications and division.
The area of math you should be the strongest in depends on the area of computer science you want to study. However, the previously discussed areas are a good start. If you want a computer science degree, then definitely brush up on your math skills.