apple watch sport

Hello blaze84,

Thank you for reaching out to the Apple Support communities. I understand you'd like to change the activity goals on your Apple Watch.

The article, Use the Activity app on your Apple Watch, outlines the steps.

Change your activity goals

You can adjust your goals at any time to better suit your activity levels.

1. Open the Activity app on your Apple Watch.
2. Swipe up, then tap Change Goals.
3. Tap to increase or decrease the number of active calories for your daily Move goal, then tap Next.
4. 
5. 
   
6. Tap to increase or decrease the number of minutes for your daily Exercise goal, then tap Next.
7. Tap to increase or decrease the number of hours for your daily Stand goal, then tap Ok.

Thanks!

You cannot,that is a WatchOS7 feature and your 1st generation watch will only update to WatchOS4.