There are two ways of saying that.
1. 전 ㅇㅇ을/를 좋아해요. I like ㅇㅇ
2. 전 ㅇㅇ이/가 좋아요. In my case, ㅇㅇ is good.
#2 is more common and sounds more subjective than #1.
전 비빔밥을 좋아해요. I like bibimbap. (polite)
전 비빔밥이 좋아요. In my case, bibimbap is good. (polite)
난 피자를 좋아해. I like pizza. (casual)
난 피자가 좋아. In my case, pizza is good. (casual)