Many high schools do offer economics (at the level of AP economics or introductory college economics), which you can choose as a social studies elective to check how interested you are in the subject.
Economics beyond that level typically requires more math and statistics, so you want to take math to the highest level available to you (those going on to PhD study in economics may take math through multivariable calculus, linear algebra, real analysis, etc. in college) and take statistics if available to you (probably at the AP statistics level in high school; an economics major may need to take more advanced calculus-based statistics courses in college).
At this level, business has similar prerequisites, though business is different from economics once you get beyond the initial prerequisites in college.
But most good high schools should have these courses that can help you determine your interest in economics, while also completing the usual well rounded high school base curriculum with English, math, science, foreign language, social studies, and art.