I was diagnosed w anxiety and prescribed Zoloft (sertraline) but still having resting hr of approx 90 and pacs and pvcs on holter with no other issues.?

Anxiety. Sorry but there isn't enough information about you to advise you other than to consult your Doctor who prescribed your zoloft (sertraline). You may be ok or you may need adjustment of your treatment, these judgments can't be made properly without lots more information and seeing the patient.