Zoloft will not get you high. Don't take it. It is an SSRI, and not a recreational drug like a benzo, opiate, stimulant, etc.
I am not familiar with benzo dosages or what will happen if someone who has zero tolerance to them or who takes them rarely takes 2mg of Xanax. I moved your thread to basic drug discussion so someone here who is more knowledgeable about benzos will reply.
Be careful with the benzos and make sure you don't take so many that you black out, and keep in mind they are addictive. Don't drink any alcohol on them as it makes you black out, even in low amounts of both drugs.