Do you have to a BS get masters?

No, you don't *have* to have a Bachelor of Science (BS) to get a master's degree. While it's the most common pathway, many master's programs will accept applicants with other undergraduate degrees (like a Bachelor of Arts, BA) or even relevant work experience in lieu of a bachelor's degree. The specific requirements vary greatly depending on the university and the specific master's program. Some programs might even accept equivalent international qualifications.