unfortunately bluetooth doesn't really do that. you can either get a bluetooth splitter or go with a radio transmitter and 2 receivers.
https://www.amazon.com/EXMAX-Transmission-Translation-Simultaneous-Interpretation/dp/B00Z5TNLM0/
https://www.amazon.com/Avantree-Bluetooth-Transmitter-Wireless-Headphones/dp/B07TLHRPDP/