Should we go to the hospital. My brother has extremely headache and chest pain and his arm is numb arm and short nest of breadth?

Yes, immediately. These symptoms can be a sign of stroke or Heart Attack and your brother needs to be seen ASAP. Don't wait to/ the ER immediately. Good Luck.
Seek urgent eval. Yes. We cannot otherwise evaluate online. He should be evaluated and assessed in person urgently.
Call 911! There are two very dangerous conditions, that your brother could be having. Time is of essence. Call 911 for immediate evaluation now.