Female two half mth ago had tia .treatment with clopidogrel and fibrazate .neck bruit diseased vein ultrasound ,brain scan.prognosis moving forward?

Depends on risks: At 76, you have a greater chance of having a stroke than a younger person. A bruit in the neck is usually due to plaque in an ARTERY, not a vein. Assuming your brain scan did not show other disease, and ultrasound demonstrated arterial plaque, you should consult a vascular neurological specialist to discuss the relative risks of operation versus medical treatment alone.