I presume you're interested in a haibike, since you're asking in that sub-forum! Everything Jayvee pointed out is true. I'm a bigger guy than you (Much), and have an Sduro Haibike 400wh battery. On a relatively flat ride and low winds I would expect 40-45 miles of range in the 2nd highest motor setting (based on a couple of 20 mile rides before I hurt my back last year). If it is very windy that would drop for me to around 3o-35 miles. On a very hilly ride that was also windy I'd expect mid-20s. If you end up with a 500wh bike, at 25% to those numbers.
At your weight, I would guess you'd get at least 25% better distances that I am able to at my weight. For reference, I pedal hard and contribute a lot to the ride, typically average speed around 15mph in urban bike path riding, and usually cruise at 18-19mph just under the limiter.