The word Gog Magog يأجوج ومأجوج mentioned 02 times in Quran in 02 verses.

(18:94)

 قَالُوا يَا ذَا الْقَرْنَيْنِ إِنَّ يَأْجُوجَ وَمَأْجُوجَ مُفْسِدُونَ فِي الْأَرْضِ فَهَلْ نَجْعَلُ لَكَ خَرْجًا عَلَىٰ أَنْ تَجْعَلَ بَيْنَنَا وَبَيْنَهُمْ سَدًّا

They said, “O Dhul-Qarnayn, indeed Gog and Magog are [great] corrupters in the land. So may we assign for you an expenditure that you might make between us and them a barrier?

(21:96)

حَتَّىٰ إِذَا فُتِحَتْ يَأْجُوجُ وَمَأْجُوجُ وَهُمْ مِنْ كُلِّ حَدَبٍ يَنْسِلُونَ

 Until when Gog and Magog has been opened and they, from every elevation, descend