Some women prefer the clean-shaven look, finding it more attractive and hygienic. Others are drawn to stubble or a full beard, associating it with masculinity, ruggedness, or maturity. Some women may have no preference at all, focusing instead on other aspects of a man's appearance and personality.
Ultimately, the best approach for a man is to choose a style that he feels confident and comfortable with, and that suits his individual features and lifestyle.