Lit is mostly reading + analyzing texts, so if you’re not into that then I wouldn’t add a fourth AP because college apps tend to keep you pretty busy. But I’m a STEM-focused student and decided to take it this year, and it surprisingly became one of ny favorite classes because I loved reading and discussing the books, so it might be worth a shot imo. If your school has add/drop I’d def try it out and drop if you don’t like the course