Surprisingly, there's a bit of a bell curve, maxing out at 5'9" being the ideal height. But it only makes about a single grade of difference.

Short folk have incredible strength to weight ratios and fine motor control from short levers. Tall people can reach farther, but can't apply the necessary force or use tiny holds as well. It all evens out in the long run, though you'll see big differences for individual lines that target a single style.

My wife and I climb at the same level despite a foot of height difference. She stays away from my long throws and compression problems. I try not to feel the tiny crimps on her projects, and it all works out in the end.