Big Jaw is one of the two skins released in the Season 13 (Star) event. It could be acquired for a limited time from mid November to early December 2020.
Big Jaw could be acquired by reaching Rank 20 and by purchasing a Golden Pass for $4.99 during the event period. There may be few opportunities to acquire this skin in the future.
Details of this skin may vary depending on location, platform or time.