According to Official Guinness Records,
The most people popping bubble wrap simultaneously is 2,681, achieved by the Denver Area Council, Boy Scouts of America (USA) at the Peaceful Valley Scout Ranch in Elbert, Colorado, USA, on 19 September 2015.The scouts popped bubble wrap as part of their annual “Camporee.”
For a complete list of 2015 records, please visit 2015 Guinness Records in United States.