Way too young to tell their genders...Their Ceres can continue to change colors up until they go through puberty, and usually with Budgies you can't tell their genders visually until they are around a year old and you know that their Ceres are finally their permanent colors. With these two Budgie there isn't even any way to guess their genders, as they look to be very young, probably both under 6 months old, so there's no way to guess...Especially with the green-pied one in the first photo, the cere is light blue but there is a lot of white, and a Budgie with a blue cere and white rings around each nostril is Female, so that could go either way. You just have to wait at least a few more months...
Female Budgie Cere: Solid Tan, Brown, Cream, or White, and Blue with white rings around each nostril
Male Budgie Cere: Solid Blue, Purple, or Pink