It's never too late!  I'm 40 years old and a friend convinced me to join her team, even though I hadn't played since I was a child.  Became completely addicted...have been playing now for almost 3 years, and now play on 3 different teams.  I would start by seeing if you have an indoor soccer facility in your area and finding out what leagues they have.  Where I play, they have teams for all different skill levels, and even offer classes to work on skills.  You can do it, and you won't regret it...good luck!