AP206 is a nice and easy readable watch face with 5 tap areas (please see "Instructions" image.)

IMPORTANT NOTE about HEART RATE measurement & display:
A small red dot above the heart indicates that the heart rate is being measured.
Heart rate measurement is independent from the Wear OS heart rate application and is taken by the watch face itself. The watch face shows your heart rate at the time of measurement and does not update the Wear OS heart rate app. The heart rate measurement can be different than the measurement taken by stock Wear OS app because they are measured at different time.
If heart rate does not work, make sure sensors were allowed after installation. To check, swap to another watch face then back. It will prompt you to allow sensors if you have not already done so.