Please explain what it means when you have severely high blood pressure and high white blood?

Separate issues: It means (as you know) that your BP is elevated. The high white count usually suggests an infection unless it is very severely elevated (>20,000) which can indicate a hematologic issue. The 2 problems are not usually related unless you happen to have an infection in your kidney or brain. In either case, there would be lots of symptoms pointing in those directions.