Good Morning, I am female, 59, 5'1 and 1/2" tall, I have a 35 % curve in my lower spine, I have one child. My question is how much should I weigh?

Muscular or not... A woman weighs around 100 pounds at 5 feet, with 5 added pounds for each inch above 5 feet. Thus, at 5 feet 2 inches, she would be around 110 pounds. If she is muscular, she can weigh more. After having a child, she might weigh a bit more temporarily. After menopause she might weigh a bit more too, but can usually aim for the 110-125 pound range.