Some may, most won't care, and some may prefer it that you are uncut. Depends on the girl, depends on where you live. Regardless, any girl who judges you based on your penis is not a girl you want to be with anyway.
My advice is just make sure you're clean under the foreskin, and you'll have no worries. Most girls are nervous about how they think their own bodies and sexual parts will look to you, rather than them thinking your penis will look weird or something. So just as you may be nervous about how your penis may look to them, they are nervous about how their breasts and vagina, etc. will look to you.