Generally speaking, you shouldn't skip the main story in ESO Morrowind. It provides essential context, lore, and rewards that enhance your overall gameplay.
The story length in Morrowind is hard to pin down precisely. It can range from a relatively short time if you focus only on the main plot, to a very long time if you get immersed in the world and do everything. It all comes down to how much you want to experience within the game.
The length of the story for Morrowind varies. If you just rush through the main storyline, it might not take too long. But if you take your time to explore every nook and cranny, do all the side quests, and interact with the rich world, it could keep you engaged for dozens of hours.
The story of ESO Morrowind doesn't have a fixed length. It depends on your playing style. Some players finish the main story in 25 hours or so, while others spend much more time delving into all the details and extras, making it last upwards of 50 hours.