Let me teach you about dropping off CV's.
1-When dropping off CV's, Monday and Tuesday are perfect day . Reason being most companies hiring by Mondays.
2- Be clean, this one is important. Don't look like your problems.
3- When you get to the store, say for example Jet Store, don't ask the security about the store hiring, security's don't really know and even If they do chances are that they won't tell you.
4- When you get to the shop, greet the security than pass like you are there to shop, then check for workers the one you think it's approachable.
5- Ask for the manger.
6-Be polite !! A KEY TO MANY DOORS!
7- First Greet her, then shower her with compliments. After that then you ask if the company does have any vacancies available,then give her/him your CV.