Yes, of course. You can enjoy a cheat day while intermittent fasting.
An occasional cheat meal or day can get you motivated after a long-term restricted eating pattern. But for fasting, a cheat day isn’t necessary because fasting is more of a lifestyle change than a diet.
Just be careful that you stick to one cheat day at a time, not several in a row. When cheating becomes a habit, it may prevent you from reaching your goals.