If you have the Blaze, there is a home screen that has what you want (time, date, steps, heart)...it's called the moment. The first screen (all the way to the left) is the home screen and that is where this info will be found. You will need to go into the FitBit app, go to Account, click on the line where it shows your device and then click on Clock Face...once you've selected the face you want do a manual sync to get the changes pushed to your blaze.
Hope this helps👻