I rate them on scales from 1 to 10. here are my examples:
1/10: Worst song I ever heard, piece of trash
2/10: Not the worst but almost. Has some nice parts that save it (Most Blackpink songs)
3/10: Not too bad, had one of two really awesome parts that I liked (Most NCT songs)
4/10: A good song, not something I'd listen to more than once though (Most (G)I-DLE songs)
5/10: Very good song with a few parts that I didn't like that much. I'll listen to it more than once or replay parts of it (Babymonsters debut)
6/10: Great song. It's something I'd add to one of my playlists, not my main playlist though (Most aespa songs)
7/10: Amazing song with beautiful vocals and a nice rhythm/genre. I'll save it in my fav songs playlist (Most SKZ songs)
8/10: One of the best songs I've ever heard, I'll replay it again and again, hundred times (Most StayC and Red Velvet songs)
9/10: Addicting asf, I love it so so so damn much, I'll never ever forget this song, I will learn the choreography, learn the lyrics and write them everywhere I can for 2 months. I will listen to it like I'm obsessed (Most Le Sserafim and IVE songs)
10/10: Perfection. Absolute perfection. This song is going to be my new personality for the next 9 months, I will dedicate 100 Pinterest pages to it, i will sing it all the time and play it on loop for 67 weeks. (NewJeans entire discography)