Shaving my eyebrow

So my left eyebrow has been giving me problems for ages now and I try my best to fill them in with makeup and make it match my other brow but it never does. I’ve tried growing it out and shaping it again but somehow it’s even worse. So I’m just wondering what would happen if I were to shave my eyebrow off and start again? how long would it take to grow back? I’m really considering it lol