This is the 418th most frequent Korean word.
혜택을
"혜택을" means "benefits" or "advantages."
In this sentence, 혜택을 refers to the benefits or advantages one can gain, in this case, associated with signing up for membership.
회원 가입 시 다양한 혜택을 받을 수 있습니다.
You can receive various benefits when you sign up.
Here, 혜택을 describes the special privileges or advantages that accompany the purchase of a product.
이 제품을 구매하면 특별한 혜택을 제공합니다.
By purchasing this product, special benefits are provided.
In this case, 혜택을 signifies the improved advantages or opportunities available to consumers as a result of policy changes.