I have a supervisor that is in an indirectly way harassing me. How should I deal with this? Gave my opinion on something he told me to go f*** myself

There is not enough information that you have given here.  Based on what you say in your question, a one time indelicate or even obscene statement by a supervisor, such as you cite, without more is not enough to constitute a legally-significant hostile working environment on any basis. The discrimination laws are not rules of workplace etiquette. They only touch the most serious misconduct.    Michael Caldwell 404-979-3150