Health records not reflecting in Apple health

You should be able to find Health Records by taping on your icon in the upper right corner of the screen. It's then the second item under "Features". Tap "Add Account". This will allow you to add your account with your doctor or hospital to the app (assuming they allow that).

If you bought your device abroad or unlocked, it’s possible it was set for another region.

Health Records are only available if the phone’s language and region settings are in the USA, UK or Canada.

To check/change settings, go to:

Settings>General>Language & Region (Below Date & Time)

Apple Health shows files downloaded but don’t show in Apple health