Hi I have bought new budgie,but I don't know his exact age and he cant fly.Right wing stands higher than the left.I want to know if he has a problem with the wings or he is new to fly?

It's possible that his wings are clipped from the breeder/shop, or they may be broken.

I have a big Avery for parakeets, but the last two hatchings I have had,   I had two babies from different hatchings that can't fly. I have been raising babies for years and have never had this happen.  Is there anything I an do to help them fly?