This is the 4107th most frequent Korean word.
저를
"저를" means "me" or "myself" (polite form, object marker).
In this sentence, '저를' is the object pronoun meaning 'me', indicating the person who is liked.
저를 좋아하세요?
Do you like me?
Here, '저를' is again the object pronoun 'me', as the recipient of the action of looking.
그가 저를 봤어요.
He looked at me.
In this example, '저를' represents 'me' as the direct object being helped by the teacher.