Veo 2 video allow for upload adobe stock

If you own the content and have obtained all necessary signatures to use the content commercially, I don't see any problem with using Veo. 

Did you read their user TERMS?  If you have any questions, ask Veo.

https://www.veo.co/en-us/terms

Adobe doesn't care what tools you use to create your assets. You must confirm with the software provider that they permit commercial use of any assets you produce with their software.