Title: Pokémon Players Cup IV - VG Global Finals Day 1 - Beast Ball...
During the Pokémon Players Cup IV - VG Global Finals Day 1 on August 30th, 2021, a code to receive a Beast Ball in Pokémon Sword and Shield was announced. The code is:
PC4F1NALSBEAST and it can be redeemed until August 2nd, 2021.
Source:
https://www.youtube.com/watch?v=MM35V1wkp4Q