why didnt i receive my veterans day achievement?

Hi

If you met the requirements for the Activity Challenge but the achievement has not yet been awarded, then Apple advises that you should wait for up to nine days for it to be awarded:

Earn Activity achievements using your Apple Watch - Apple Support

If the issue persists after that time, then I suggest that you contact Apple Support for assistance:

• Contact - Official Apple Support
• Apple Support (@AppleSupport) | Twitter
• Genius Bar Reservation and Apple Support Options - Apple