Little is detailed about Cyclops’ life before the zombie plague arrived on Earth-2149, however it can be presumed that it followed much the same path as his Earth-616 counterpart.
At the Xavier Institute, Cyclops and a number of X-Men were battling a zombified Alpha Flight, when Magneto arrived and propeled metallic debris through the zombies heads with his magnetic powers, and he asked them to help him save humanity.
Presumably, they get in contact with Nick Fury, and battled their way through the city to reach the S.H.I.E.L.D. Helicarrier, which was acting as base of operations for the resistance. There they heard Nick Fury tell them that it was the end of the world, and that everyone was now on the same side, including Magneto.
It can also be assumed that he was part of the team sent back down to the surface to battle the zombies, and it was there that he was presumably infected with the zombie plague. When Beast and Reed Richards found a sizeable stash of meat in Latveria and the surrounding area, Cyclops was among a huge horde zombies headed off to lay siege to Castle Doomstadt.
Unable to gain access to the fortress, Scott was attacked by the re-animated corpses of the Deadite Legion, though apparently this was more of an inconvenience than anything else, as he was later present in New York seemingly none the worse for wear (other than a touch of zombification, obviously).
Normal human male who engages in intensive regular exercise.