if its dropped severely then you'd need a camber kit to work out the added negative camber.
if you dont get the camber kit, you will have camber lol, you will wear through the insides of your tires faster, but it doesnt really affect anything else
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i will effect handling to a degree, ie less grip, but unless you are a race car driver you probably wont notice a difference. also your tire life will be shortened, because instead of using up the full width evenly once you wear down the tread on the inside the outside is wasted.
\but camber sucks when you wear through tires in half the time and the outside of your tire is brand new while the inside is through the metal. do it right and eliminate as much camber as possible