Got 3D animation as Unity asset bundles. What now ?

I’m coming in ahead of a rookie.

We had a 3D animation created about 12 months ago.
This animation was presented at a trade fair.
Visitors were able to navigate through a plant while
the animation was running.

Now the collaboration is finished.

The agency has written:
“We can provide you with the data as Unity Asset Bundles.”

Well… what do I do with the data?
Who could help me?

I need advice first and then a partner.
Thanks for your help.