Most universities will have some mental health counselors and there are lots of other ways to find support. I know that the Resident Advisers at school have some training to spot issues and to help you find the right place to get help. It really depends on the school what resources will be available. My school had a freshman class that allowed for all the new students to get together and ask questions in more of a safe space. They assigned mentors from other classes to help with the adjustment and find the resources needed to ensure that you safely transitioned to college life.