The answer depends on what type of grant you are looking for and what organization would provide such a grant. There is a lot of confusion out there about what grants really are, and how they are different from government benefits. There is no place you can go to and get an application that basically just asks for money.
Grants are typically awarded to non-profits or government agencies for very specific purposes that are in the governmenet interest. Benefits are provided by the government for low income or underserved individuals or groups. You can get a pretty clear overview of what kinds of grants are out there and how you find them here.