As of my last update in early 2023, the 2024 Bet Awards had not yet occurred, so I cannot provide the winner for the Best Group category for that year. The Bettys, as they are sometimes called, usually take place annually, and winners are announced during the event. To find out who won the Best Group Bet Award for 2024, you would need to check the latest news or the official Bet Awards website after the event has happened.