Looks like a girl! Head feathers look to be the same length all over. Crest is probably that shape because of a vaulted skull. I don’t see long saddle feathers that would indicate boy.
Now that I think about it, most of my polish chicks have been raised under a heat lamp and more respectful roosters are normally the ones raised by a hen. I will try putting him with my dominant hen and see if she straightens him out. My hen from this polish line is a complete doll and loves...
The crest looks kinda boyish, longer feathers at back of head. I can’t say for sure, some birds grow their crest in all weird and I can’t see saddle feathers.