Like the others said, you have multiple choices of majors, many of which your university will offer specially tailored curriculum for someone planning to go to law school. Among these are History, Political Science, Philosophy, and Natural Resource Sciences. Philosophy is a good choice, because people who major in Philosophy tend to score higher on the LSAT (the law school version of the SAT), because the LSAT will mainly judge your reasoning and logic, not knowledge, and Philosophy helps you learn that. However, though the other majors have this flaw to a lesser degree, you should be absolutely sure about going to law school, or chose a different major, or double major. This is because most of the majors offered for pre-law don’t really have an application for other jobs, like Philosophy, which has practically no other career options, and Political Science, which has like 8% job placement, and you need a master’s degree in it to really do anything. However, like said above, if you’re set on going pre-law (of which the education and job itself takes a LOT of dedication) you’ll want to take classes to learn reasoning, writing, debate, and other English skills. You will want to maintain a high GPA (most law schools’ averages are, at the lowest, 3.2), prepare and score highly on your LSAT, volunteer (like getting into a college in the first place, they like well-rounded people), do extracurricular clubs and activities, especially ones that apply to pre-law, like Debate or Mock Trial, and intern (not only to look good on applications, but also to get job experience and build connections, as well and make sure law is what you truly want to do). You’ll also have to apply to get into law school, some of which are incredibly hard to get into (the Ivy League law schools, University of Chicago, etc.) while others are easier (Brooklyn law school, etc.). However, the top schools have incredibly high job placement and salaries, University of Chicago having 99% of their graduates in a job within 9 months of graduation, and $160,000 starting salaries.
However, if you’re willing to run that gauntlet, then the best of luck to you, and I hope you succeed!