In Diablo 2 Resurrected the Chains of Honor runeword is "DolUmBerIst". So when making Chains of Honor armor, you need to add a Dol rune, an Um rune, a Ber rune, and then an Ist rune to a set of 4-socket body armor in that order. It should be noted that your the base armor must have four sockets, and you need to add runes in order, otherwise you will not be able to craft the item you want.

The Gothic Armor is a body armor in its most basic form with four sockets. If you're lucky, you'll find a set of 4-socket Gothic Armor on Act V on Normal difficulty, but you'll D2 Resurrected Runes be more likely to get it or another set of 4-socket armor on Nightmare or Hell difficulty. And Secret Cow Level is still the best place to farm and grind.

However, to get these runes, you usually have to Diablo 2 Resurrected Runes play on a higher difficulty level. While there's a chance you'll get a Dol rune in Act V on Normal difficulty, it's easier to farm it in The Countess or the Hellforge in Nightmare. You can get the Um rune on Nightmare difficulty, during Act IV or later, or from the Hellforge. the Ist rune sometimes drops on Act V on Nightmare difficulty, but it's more likely to appear on Hell difficulty. However, the rarest of this rune recipe is the Ber rune. You can only get it from Act III or later on Hell difficulty, and cannot get it from The Countess or the Hellforge on any difficulty.

If you spend enough time, I'm sure you'll be able to gather all the necessary ingredients to craft one of the best all-around body armor in the game. If you don't want to spend too much time, you can go to MMOWTS, they sell various Diablo 2 Resurrected Items including Chains of Honor armor, buy from there, you will be able to save a lot of time doing in-game other useful things.