MacBook Air won’t turn ON

Hi,

If your Mac doesn't turn on - Apple Support

If it doesn't help, contact Apple Support or make Genius Bar reservation if your local retail Apple Store is open or find opened local Apple Authorized Service Provider to be examined your MacBook Air.

Official Apple Support

https://www.apple.com/retail/geniusbar/

Apple - Find Locations - Location Selector

Shutdown - if not already off - Hold Power Button for 10 seconds and try again.