That's terrible that happened to both of you. Talk to your brother about the incident if it still bothers you; maybe you can both have a meaningful conversation. I'm not exactly sure what you were trying to ask, but you made multiple grammatical errors throughout your text; perhaps you want me to rewrite it for you?
Your text should be rewritten as:
When I was five, my brother babysat me. He and I got into a huge fight, and I pretended to run away. I opened the front door and ran outside. Then I sneaked around and went back inside through a back door. I was in my closet for over an hour while my brother searched the whole neighborhood, worried that my mother would come home and find me gone. It was a great joke. Looking back on it now, I feel horrible for how much I must have scared him with my trick. I didn't realize how he must have felt.