its an animated chocolate syrup simulation on the ice-cream scoop.
the 3d video doesn't support .abc file format therefore the animation is not possible to view it in 3d viewer.
you can get the .abc file the additional file.
Here is the video of the animation on Youtube
Hdri is not Included in blende file.
https://www.fab.com/listings/11a2326f-cfbc-4f3e-a6d8-8aa34d066edb