Hey miriamkwan,
We see that your songs and the number of plays aren't updated in the Apple Music Replay 2020. Apple Music Replay uses the music you listened to throughout the year to figure out your top artists, songs, and albums. With Apple Music Replay, a playlist will be created using the top songs for that year. For more information, click here: Apple Music Replay on the web.
Check to see if the playlist is the same using the website from the article. If the list is up-to-date there, you can click the +Add button to add to your library. Once it's added check your Music app to see if the information is there.
If the information still doesn't appear to be updated, Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac If you receive any prompting asking if you want to keep certain information, select yes. After signing out, sign back in and check if the Apple Music Replay is updated.
Best regards.