There are five helm runewords in Diablo 2 Resurrected: Lore, Nadir, Dream, Delirium and Radiance. One of the best and most popular of the five runewords is the Lore runeword. It's so popular because it gives +1 to all skills and has a +2 mana bonus after every kill, which is pretty powerful. Also, it's not very difficult to find the materials needed to make it in the game.
OrtSol is Lore's runeword, you can make it by putting the rune Ort and Sol in any 2-socket helm. But be aware that you have to put the Ort runes first and then the Sol runes in the same order, if you reverse the order it won't work. Also you can't use helmets with more than two sockets, and they don't allow you to get the items you need.
It is very easy to find a 2-socket helm in the game, you can find one in the early game. But finding an Ort rune is Diablo 2 Resurrected Runes more difficult on Normal difficulty, and Sol runes do not drop on Normal difficulty. If you want to get these two runes in the game, the best and easiest way is to repeatedly kill The Countess in the Forgotten Tower on Nightmare difficulty until it drops the rune you need
But the Lore Helmet can only be worn when your character is level 27 or above, and it can bring you great bonuses: +1 to Buy D2 Resurrected Runes all your skill levels, +10 to your energy, every time you hit After killing you gain +2 mana, increase your lightning resistance by 30%, reduce your damage by 7, and increase your light radius by 2.
Overall Lore helm is very useful for players, and it is not very difficult to obtain it. Of course, you still feel that this process is very long and boring. If you want to get Lore helm faster, then going to MMOWTS may be another better choice for you, they will sell various Diablo 2 Resurrected Items, you just need to go to their Order online and get what you need in no time.