6 verses have
reward
in Edition Clear Qur'an by Talal Itani / Al-Kahf (The Cave)

18:2Valuable—to warn of severe punishment from Himself; and to deliver good news to the believers who do righteous deeds, that they will have an excellent reward.

18:30As for those who believe and lead a righteous life—We will not waste the reward of those who work righteousness.

18:31These will have the Gardens of Eden, beneath which rivers flow. Reclining on comfortable furnishings, they will be adorned with bracelets of gold, and will wear green garments of silk and brocade. What a wonderful reward, and what an excellent resting-place.

18:44That is because authority belongs to God, the True. He is Best in rewarding, and Best in requiting.

18:46Wealth and children are the adornments of the present life. But the things that last, the virtuous deeds, are better with your Lord for reward, and better for hope.

18:88“But as for him who believes and acts righteously, he will have the finest reward, and We will speak to him of Our command with ease.”