Apple store iş telling me that the password iş wrong

You need your password login user name for your MacBook Air to sign in to the App Store.

See the following Apple articles:

If you forgot your Mac login password -> https://support.apple.com/en-us/HT202860

Change the login password on Mac -> https://support.apple.com/en-gb/guide/mac-help/mchlp1550/mac

Reset your Mac login password -> macOS User Guide - Apple Support (MN)

If you can't reset your Mac login password -> https://support.apple.com/en-gb/HT212190

See also -> Ways to remember passwords on Mac

Ways to remember passwords on Mac – Apple Support (UK)