Stan Lee was 92 in X-Men: Apocalypse when he played the character 'Stan Lee'.
That was over 8 years ago in 2016.
In 2018 he died aged 95, starring in 123 films in his career, 34 of those after X-Men: Apocalypse was first released. If he were alive today he would be 101.
In X-Men: Apocalypse, I think Stan Lee looks: