Essentially, a business degree would be fantastic!
What an exciting plan to have! The first step I would recommend is looking into if your school has an Entrepreneurship major or minor program and speaking to your academic counselor about your career goals. He/she will then be able to help prepare a plan for you to lean into owning your own business through the courses you will take. Classes offered at my University related to Entrepreneurial Management include Intro to Entrepreneurship, Managing Innovation, New Business Feasibility & Planning, Applied Technology Entrepreneurship, Sales Management, StartUp: Customer Development and Testing, and Project Management. While the classes offered by your University may not match these titles exactly, look for courses that might be similar to these. I would also recommend developing relationships with the professors you have for your entrepreneurship classes as they can help serve as mentors for your future business aspirations!