Bible in my Language
https://www.bibleinmylanguage.com/search.php?search_query=korean&Search=
https://www.bibleinmylanguage.com
Please put the word Korea or Korean in the search engine.
ESV Korean-English Study Bible
Amazon
https://www.amazon.com/ESV-Korean-english-Study-Bible-Non-Zippered/dp/8953717442
The ESV Study Bible now available in Korean
Crossway
https://www.crossway.org/articles/the-esv-study-bible-now-available-in-korean/