Can I pair a 2015 Macbook with Air Pods 2?

AirPods 2 - Tech Specs - Apple Support

The Compatibility list includes

• MacBook Air (13-inch, Early 2015 - 2017)
• MacBook Air (11-inch, Early 2015)
• MacBook Pro (Retina, 13-inch, Late 2012 - 2015)
• MacBook Pro (Retina, 15-inch, Mid 2012 - 2015)
• MacBook (Retina, 12-inch, Early 2015 – 2017)

which would appear to include all 2015 Mac notebooks (whether plain MacBooks, MacBook Airs, or MacBook Pros).

Yes, provided the profile information appearing below your post (macOS 11.7) is correct. Read Set up AirPods with your Mac and other Bluetooth devices - Apple Support.