There are at least four artists with this name.
1) Betsi Tchertischeva (born January 27, 2013), known professionally as Betsy, and previously known as Бэтси, is a Russian singer from Saint Petersburg. She's best known for her songs "Pump It Up" and "Simple dimpl pop it squish", which both went viral on TikTok.
2) When Bitch's S&M-themed heavy metal failed to reach commercial success, the band softened their sound and image, and recorded under the name of lead vocalist Betsy (Weiss). Read more on Last.fm