My MacBook Air isn't showing anything it's asking me to reinstall macOS

oshin227 wrote:

My MacBook isn’t showing anything it’s asking me to reinstall Macintosh HD

How to reinstall macOS - Apple Support

from Internet Recovery you can run the first Aid if you have an issue...

Boot into Internet Recovery (Option Command R) and from the dropdown menu: Utilities>  Disk Utility> run the First Aid on your Macintosh HD (and the "Macintosh HD-Data" volume as well if Catalina/Big Sur/Monterey/Ventura) If errors are found and repaired, run again until no errors reported.

Disk Utility>View>Show All Devices The best sequence is —

Volume level

Container level

Parent drive

https://support.apple.com/en-us/HT204904

Can you provide a screenshot (or photo) of that screen?

Ordinary if you're asked to reinstall, then you do exactly that. But it rather depends on what led you to the problem.