Hi there and welcome to the forums!
Like others have said, there are currently tournaments for the Java network. Although it would be nice to have community tournaments for Bedrock, there are a lot of things that could go wrong.
Bedrock has more than 2x the number of players than Java, meaning there will most likely be 2x the amount of players participating in tournaments. It would be impossible to fit every player into one match, let alone one party. There may also be more cheaters raiding the tournament, because after all, it is a lot easier to hack on Bedrock than Java.
Overall, I just think it might be a little too chaotic on Bedrock, and I think it should remain as a Java-Exclusive event. Remember there are a few small unofficial meetups/tournaments on Bedrock (sometimes organised on Discord), but for now, there are no official Bedrock tournaments.
Thanks anyways for your suggestion!