There is 521 episodes. out of all 21 seasons.

I wanted to do a top 20, because there is soo many episodes. but there is many that overlap so we will do top 22

22-12 is are tied at 8.1

1. Season 17 Episode 10 The Battles Part 4

2. Season 20 Episode 13 Top 17 Performances

3. Season 2 Episode 4 Blind Auditions Part 4

4. Season 2 Episode 2 Blind Auditions Part 2

5. Season 2 Episode 6 The Battles Begin

6. Season 2 Episode 10 Live Performance Week 1

7. Season 5 Episode 9 Battles Part 3

8. Season 7 Episode 24 Finale Performance (episodes are numbered weird for this season on IMDB)

9. Season 7 Epsiode 25 Finale Results (episodes are numbered weird for this season on IMDB)

10. Season 8 Episode 4 Blind Auditions Part 4

11. Season 10 Episode 1 Blind Audition Premiere

11-7 are tied at 8.2

1. Season 20 Episode 12 The Road To Lives - 10 year anniversary edition.

2. Season 4 Episode 1 Blind Auditions Premiere

3. Season 6 Episode 5 Blind Auditions Continue

4. Season 7 Episode 10 Knockouts Begin

5. Season 15 Episode 13, Knockouts Part 3

6-5 tied at 8.3

1. Season 5 Episode 27 Finale Results

2. Season 15 Episode 11 Knockouts Premiere

4-3 tied at 8.4

1. Season 20 Episode 11 Knockouts Part 2

2. Season 5 Episode 1 Blind Auditions Premiere

2 is at 8.5

1. Season 6 Episode 1 Blind Audition Premiere

​

The highest rated episode on IMDB (by no surprise is) with a rating a 8.8 is...

1. Season 16 Episode 23 Finale Results

​

Link To Data