Ideally what should I weigh?

lol im not
talking about healthy weight ranges

im 5'5 1/2 - meduim build and 20

xx
Um...I'm 5'1 and i weigh 85 pounds. I am way under weight. You should probably
weigh 125 pounds. hope this helps
It depends what your sex is.

If you're a girl then you should be at about 125-130.

If you're a guy well then i can't help you. sorry...