How can I get, steps, total calories burned, and bpm on my watch face?

The following link is very useful for determining what metrics (Complications) can be setup on a particular watch face:

Apple Watch faces and their features - Apple Support

As for "Steps" and "Calories":

I am not finding those listed, but both are associated with Activity and you can set up a goal for the number of calories that you wish to burn in a day and the outer, red ring will show your progress. If you set a goal of 1,000 calories in a day and you look at the ring and it's half way around, you'll know that you are somewhere around 500 burned thus far.

"Heart rate" is one of the complications that is available on many of the different faces. I use it on one of mine. It isn't real time, it'll show the last BPM measured and then I click on it and it takes a new measurement.

For other ideas of things that aren't quite like a Fitbit that you'd like to see incorporated into future Apple Watch updates, fill out and submit this form ;-)

Feedback - Watch - Apple

My impression of a Fitbit is that it's main focus is to provide information that relates to staying fit. An Apple Watch is doing a whole lot more!

Apple doesn't provide a native steps complication. However, you can download a third-party app that provides one. One I know of is called StepsApp.