Sure, here's how you can create a playlist on TikTok:

1. Open the TikTok app and navigate to your profile.
2. Click on the "+" icon at the bottom of the screen to create a new video.
3. Choose the sounds option at the top of the screen.
4. You will see a list of songs and sounds. At the top right corner, you will see a bookmark icon labeled "My Sound", click on it.
5. This will open a new page where you can see all the songs you've saved. You can add more songs to this list by clicking on the "+" icon next to each song.

Please note that TikTok doesn't have a traditional playlist feature like other music streaming apps. The "My Sound" feature is the closest thing to a playlist on TikTok. It allows you to save your favorite songs in one place, but it doesn't allow you to organize them into different playlists.