"Supernova" debuted at number eight on South Korea's
Circle Digital Chart in the chart issue dated May 12–18, 2024, ascending to number one in the following week. The song also debuted on the
Billboard South Korea Songs in the chart issue dated May 25, 2024, ascending to number one in the following week. The song achieved the
perfect all-kill status, where a song simultaneously reaches number one on the real-time, daily, and weekly components of
iChart. In Japan, the song debuted at number 26 on the
Billboard Japan Hot 100 in the chart issue dated May 22, 2024, ascending to number 25 in the following week. On the
Oricon Combined Singles Chart, the song debuted at number 24 in the chart issue dated May 27, 2024. In Singapore, "Supernova" debuted at number 28 on the
RIAS Top Streaming Chart and number 11 on the Top Regional Chart in the chart issue dated May 10–16, 2024, ascending to number six on the Top Streaming Chart and number two on the Top Regional Chart in the following week. In Hong Kong, the song debuted at number 15 on the
Billboard Hong Kong Songs in the chart issue dated May 25, 2024, ascending to number one in the following week. In Taiwan, the song debuted at number six on the
Billboard Taiwan Songs in the chart issue dated May 25, 2024, ascending to number two in the following week. In Indonesia, the song debuted at number 14 on the
Billboard Indonesia Songs in the chart issue dated June 1, 2024. In Malaysia, the song debuted at number ten on the
Billboard Malaysia Songs in the chart issue dated June 1, 2024. In United States, "Supernova" debuted at number five on the
Billboard World Digital Song Sales in the chart issue dated May 25, 2024. In New Zealand, "Supernova" debuted at number 20 on the
RMNZ Hot Singles in the chart issue dated May 20, 2024, ascending to number 12 in the following week. In United Kingdom, the song debuted at number 33 on the
OCC's
UK Singles Download Chart, and
UK Singles Sales Chart in the chart issue dated May 17–23, 2024. In Netherlands, the song debuted at number 17 on the
Global Top 40 in the chart issue dated May 27, 2024. In Argentina, the song debuted at number 50 on the
Billboard Argentina Hot 100 in the chart issue dated June 1, 2024. Globally, the song debuted at number 50 on the
Billboard Global 200, and number 23 on the
Billboard Global Excl. U.S. in the chart issue dated May 25, 2024, ascending to number 19 on the Global 200, and number seven on the Global Excl. U.S. in the following week. The song peaked at number 17 on the Global 200, and number six on the Global Excl. U.S. the following week ==Music video==