It's entirely appropriate to give a woman a nice compliment. It's not creepy. What's creepy is when it's weaponized because the speakers wants sex from the recipient.
"Nice dress!" is something many women would love to hear. What they don't want to hear is "Nice dress!" with the subtext being "Nice dress! I hope this compliment starts a conversation which ends with you removing it!"
And, yes, it's incredibly obvious when men's compliments have this subtext.