Is a blood pressure of 163/99 dangerous for someone who has high blood pressure? I'm alway told im border line

This . This is not borderline, this is high. You should be on medication. Follow up with your doctor to begin treatment and have blood tests and an ekg done if you have not done so already. Untreated hypertension can lead to a heart attack or stroke so make sure you see your doctor right away. Best of luck.