How often should a women get her hormones levels checked via blood work? I feel fine, just annoying breakouts. Every 3 months? 6 months? Thanks

Age? It also depends on your age- are you older and concerned about menopause? If your only symptom is acne, i would not be concerned.
Which hormones? Without knowing what kind of "breakout" you're having, it's hard to know whether checking any hormones levels would be useful. If your menstrual cycles are irregular there are many causes. Only rarely would checking hormone levels be necessary in a woman who feels fine and is otherwise healthy.