The rating system I use is pretty basic. It’s the Star system that is universally used.
1 star| Didn’t Like
★ ☆ ☆ ☆ ☆
2 stars| It’s Alright
★ ★ ☆ ☆ ☆
3 stars| Enjoyable
★ ★ ★ ☆ ☆
4 stars| Great Read
★ ★ ★ ★ ☆
5 stars| AMAZING
★ ★ ★ ★ ★