You must be asking about Homeowner's Association Fees. They cover things like grounds maintenance, trash removal, common ares, community swimming pools, clubhouse, exterior insurance.
It depends on the HOA. Your Realtor should be able to find out exactly what the HOA dues for any given area cover. They vary from community to community and the inclusions are also very different.
We have one community in Denver where the HOA covers the heat, water and so much more.
Best of luck to you.