Hollywood kids

In Hollywood, everybody wants to be rich, famous, beautiful, and attractive. Nobody wants to be old, unknown, and poor. In Hollywood, parents are ambitious and the children are part of the parents' ambitions. Parents pay for extravagant parties, expensive cars, and designer clothes. When every dream can come true,kids learn the value of nothing. Parents buy care and attention for their children because they have no time to provide them(care and attention are two things, so require a plural pronoun) themselves. Often There is no parent at home most days, (saying both "often" and "most days" is redundant) so children organize their own social lives.They become adults before they're ready. Hollywood has always been the city of dreams. The kids in L.A. live unreal lives where money, beauty, and pleasure are the only gods. Everyone thinks Hollywood is so glamorous, but I have news for you, it is really dangerous growing up in L.A.

Excellent job. your grammar is nearly perfect. You should leave a space after commas and period to separate words and make the paragraph easier to read.