how much do you think a 4'11'', 15 year old girl should weigh?

At your age you’re still growing so your weight will fluctuate a lot and it’s difficult to define a healthy weight. I’d say 130lbs at most and 85lbs at least. Don’t worry if you’re at one of the more extreme ends of the scale, an adult of your height is healthiest at 92-123lbs so if you’re trying to become healthier, try and stay between those numbers and you’ll be great!<3