Will uneven cheek after Juvederm Volift cheek filler go away?

Swelling after filler is can often create the appearance of asymmetry.  Don't judge the filler by the first few days.  Swelling can make things look more full or asymmetric.   Thankfully, with hyaluronic acid fillers, if the asymmetry persists, the product can be reduced with simple injections of hyaluronidase.   Ice the areas and give it a little time.  Best of luck.

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

Thank you for your question. 
At this stage it could be swelling, let it settle for a couple of weeks. Cold compress can help with the swelling. 
If at two weeks you are still concerned the contact your treating practitioner for a face to face review. The good thing is that hyaluronic acid can be dissolved with an enzyme called hyalase. 
All the best.