To beat the dragon called "Thoron" in Skyrim, you'll need to follow these general steps:
Prepare yourself: Make sure you have enough health, stamina, and magicka potions to keep you going during the battle. Equip the best armor and weapons you have, and consider bringing followers or companions with you to help.
Engage in combat: When you encounter Thoron, start attacking it with your best weapons and spells. Try to dodge its attacks and keep moving to avoid getting hit.
Use dragon shout: Use dragon shouts to weaken Thoron, such as "Dragonrend," which will force the dragon to land on the ground, making it vulnerable to your attacks.
Aim for the head: Aim your attacks at the dragon's head, which is its most vulnerable spot.
Watch for its attacks: Thoron can breathe fire or ice, and can also use its wings to create a strong gust of wind that can knock you down. Watch for these attacks and try to avoid them.
Keep moving: Continue to move around and attack the dragon until it is defeated.
Collect the loot: Once the dragon is defeated, collect its soul and any loot it drops, such as dragon bones or scales.
Remember, dragons in Skyrim are tough opponents, and it may take a few attempts to defeat them. Be patient and persistent, and don't be afraid to try different tactics if you're having trouble. Good luck!