Huawei Health no longer connects to Android Health as result of China-US regulatory issues, which means Huawei does not support downloading apps directly from the Google Play store.
So, while you can't officially download our app from the Play Store, there are alternative methods to access some Google apps and services. Most users have had success downloading Count.It from APKPure:
https://apkpure.com/count-it-journey/com.countit.journey
After downloading the Count.It app from APKPure, you will then ALSO need to download Google Fit or Android Health Connect so you can auto-track your steps and exercise --- unless your Admin has set the challenge to allow manual entries, in which case, you can simply enter all your tracked activity manually on the Count.It app.