Kabuto can't learn X-Scissor as an egg-move in any games. Source
Alternatively, you can easily look up this information for yourself on this website, here.
Kabuto can't learn X-Scissor at all. However, Kabutops learns it via TM from Gen 4 onwards.
In the future please try to let us know what games you are talking about when you ask a question, it helps people give you the best possible answer :)