II can’t get my new Apple Watch to track my exercise right. I calibrated it and it’s not working.

Make sure both devices are up to date, then unpair the watch, pair again, and set up your fitness calibration & information. To test it, reference

https://support.apple.com/en-us/HT207941

How is it wrong? Do you have some more specifics?

They all have to meet the same criteria to get exercise credit.

Here is some maybe helpful info;

Get the most accurate measurements using your Apple Watch – Apple Support

Calibrating your Apple Watch for improved Workout and Activity accuracy – Apple Support

It's not me asking the question.