can you use headphones with the 2020 MacBook air

You can use Bluetooth headphones if you want wireless like the Airpod Pros, Beats etc. or you can use headphones with a Thunderbolt usb-c to 3.5mm audio adapter, or headphones with a Thunderbolt usb-c connector.

List of compatible headphones at apple.com

https://www.apple.com/us-hed/shop/accessories/all-accessories/headphones-speakers?page=1&f=13inchmacbookair2020&fh=47d1%2B4c6a

Any standard headphones with a 3.5mm audio plug will connect to a 2020 MacBook Air. The headphone port is on the right-hand side of the computer.

https://www.apple.com/macbook-air/specs/