Help, I tanned my skin..

My parents brought me and my two younger siblings to the beach about two days ago. I was already tanned and now, I'm even darker. My skin is very itchy and is full of acne.. I know how to heal the acne but what about my ultra damaged skin. It's very dark and I need to lighten them up before the football matches start this weekends. I'm the team captain for the cheer leading squad and I want to look my best. Help! Also I have very soft skin..