My high sensitivity CRP is 3.2 and I'm 23 years old. What does this mean?

Context... By itself, don't read too much into an elevated crp. It can be high for many unrelated reasons (infection, inflammation - very nonspecific things). Ask your doctor what it means in terms of the whole clinical picture and i bet if you checked it again a few days or weeks from now, it'll be normal.
Elevated. A high sensitivity CRP is a test for low level inflammation, different from frank inflammation like pneumonia. Elevated hscrp is a risk factor for cardiovascular disease. If you had any infection or inflammation from any reason, at the time the blood sample was taken, the test should be repeated about 6 weeks after any such inflammation has cleared. There is no immediate risk.