To find your playlist history on Spotify, you'll need to go to the "Play Queue" section. Here are the steps:

1. Open your Spotify app.
2. On the bottom right corner, tap on "Your Library."
3. In the upper right corner, you'll see a settings icon, tap on it.
4. Scroll down and tap on "Playback."
5. There you'll see the "Play Queue" option.

However, please note that Spotify does not currently have a direct feature to view playlist history. The Play Queue shows the upcoming songs.

If you want to see the songs you've recently played, you can:

1. Go to the "Home" section of the app.
2. Scroll down until you see the "Recently played" section.
3. Here you can see the songs, playlists, albums, or artists you've listened to recently.

Remember, songs you've listened to while in a private session won't appear in Recently Played.