Have panic attacks and heart rate jumps up and down from 150- 180. gets slower if i walk around n faster if im still.is 150-180 normal during attack?

It can be: Yes, this is well below your expected maximum heart rate for your age and can happen during a true panic attack. The fact that it slows while walking may suggest that walking is calming for you during an attack. Now, it is important to make sure the primary cause of your symptoms is panic rather than a heart arrhythmia, but if you've ever had an ECG/EKG during an episode, then you know.