All babies look like females when starting out. You will not be able to determine gender until 6-8 inches. You have a split scute baby and I think some people believe that split scute tortoises tend to be female, though. You'll have to be pretty patient to finally find out. Either way, he/she is beautiful
No way to know yet. Incubation temps can offer a clue, but that is not definitive in the real world. Most of the time split scutes like that indicate female, but there are rare exceptions.