As I stated previously, no one is going to be able to tell you definitively what your outcomes will be with HRT.
Everyone has their own work ethic regarding diet and training and those are big factors. Moreover, where you start plays a big role in the equation too.
So again, no one can tell you "expect 10 pounds of muscle and you'll drop 3% body fat."
These things don't lend themselves to that type of linear thinking.
Plus being at 900 or 1000 is not going to be a significant changes for some whereas it may be a bigger change for others who started with very low t. Like marginal utility.