Recently, Huawei Health app has been removed from Google Play Store. The only trusted way to download Huawei Health app is from Huawei AppGallery, that is the only official source.
You can get the latest version of Huawei Health app thru Huawei Official website: https://consumer.huawei.com/en/mobileservices/health/ , it will still work for all android users (require Android version 6.0 & Above).