Does Trolls World Tour Have a Post-Credit Scene?

Yes, there are extra scenes during, or after, the end credits of Trolls World Tour.

There are extras. Stay at least until the scrolling credits start, about 3 minutes.

There's an assortment of stuff: lots of characters dancing and singing; a note about how the movie is based on "The Good Luck Trolls created by Thomas Dam"; then a tiny extra scene with two new characters (with a famous voice).

During the scrolling credits there's more music, and also some cute 'troll quilting' art alongside the text, the kind of neat little images used through the movie (but no other animation or scenes).

The credits run for approximately 9 minutes.