No, betting on the Little League World Series is not legal or permitted. The Little League World Series is a youth baseball tournament for children aged 11 and 12, and it is organized by Little League International, which strictly prohibits gambling on its events.
Little League Baseball is designed to be a positive experience for children, focused on sportsmanship, teamwork, and fun. Betting on the outcomes of games involving children would be unethical and goes against the mission of the organization. Moreover, in most jurisdictions, it would be illegal to place bets on amateur sporting events, especially those involving minors.