How many total perks are in Elder Scrolls: Skyrim and does it vary for different skills?
There are a total of 251 perks.
Path of Might – 91
Path of Shadow – 74
Path of Sorcery – 86
There are also a number of other abilities that function more or less like perks, found by completing certain quests or objectives. These are free: you don't have spend points on them.