Depends from person to person. Some guys are shy and will utterly ignore you. Others are bold and hold the car door for you. Usually, when they don't like you, they usually talk to you like a normal friend would. Or if they really hate you, put on the earplugs 'cause they're gonna start screaming.
If a boy likes you, he will enjoy interacting with you, talking to you and going out of his way to make you happy. However, the signs differ from one person to the other depending on their temperaments. The only sure way to know is if he tells you so or ells your friends about it.