for girls, after they go above 5"9.5 they start to loose significant value.
they become less attractive, and by attractive I mean less sought after, less desirable, of less worth.
height is a bell shape curve.
Im sure that taller women have a bit more problems finding dates than the shorter ones, assuming equal facial and body attractiveness.
However, ive also noticed that women who are tall (like those who are 5'10 or more) more often than not actually have less attractive faces on average than short and normal height women. Maybe this is just a coincidence that i experienced this but i also notice it by looking at famous models and actresses. Im not sure if there is a biological reason for this, like maybe taller women have more testosterone or less estrogen, which can make them taller but also have more masculine faces commonly.
For example take Sigourney Weaver, she is very tall for a woman (180 cm) but her face also looks more masculine than the average woman imo, she is still decent looking but definitely not ideal. I notice this pattern a lot, i dont think its just me.
To add to that, an attractive woman is attractive regardless of height, and by that i mean that if you took Salma Hayek and made her 5'10, as long as she had the same body type and face just all her dimensions expanded to match the new height, she would still be just as attractive to me, although she would look quite big at that height and i probably wouldnt feel as manly next to her as i would with her normal height.