Yes to some extent.
Attractive people do get a lot of attention but don't know if they receive favours as well.
Dropped groceries: Many kind men offer the help to not so attractive women as well. I have myself picked up groceries for old ladies and helped them carry it to their car.
Give up seat in the bus: again the above applies. I have seen men leave their seats for elderly when the designated seat for elderly was full. I have been offered seat by some who were hitting on me. Better still, a gentleman left his seat for an elderly, came and stood next to me and started a conversation

. Intelligent fellow.
Hire them for jobs: Depends upon the job type. If you are required to be on camera, or a sales girl.. yes but a network engineer who works closed doors and an intelligent employer, no.
But if you ask me, I know all the attractive ladies at my work, which is a 1000+ employee in my building alone. If I have noticed them, I am pretty darn sure, the men have too. They get the attention no doubt. When they walk into the lobby many eyes turn to notice them. But do they get special advantages in terms of salary hikes, annual review.. definetely no.