Why cant I get AppleCare on my AirPods Pro when I just bought them last week?

The warranty and clock to purchase Applecare plus starts as soon as they are sold.

If you purchased them from a third party who is not an authorized Apple reseller, they bought them from a legitimate source and resold them.

The Airpods you bought are no longer available for Applecare plus.

Hello,

Where did you get them? If it was somewhere other than Apple, check with them:

https://www.apple.com/support/products/headphones/

Good luck.