Is there a way to redownload my saved beta file i didnt know i was suppose to keep it to have it unlocked in the game when it said it was unlocked i figured i didnt need the file so i deleted it so is there anyway to get it back?
Nope, many places including the main page of the beta that said to keep your saves.
Unfortunately not. It was stated directly in the beta that you needed to keep the player profile game save. It was only 64kb so to most people it didn't make any difference at all.
Since this file was not ever downloaded originally, it was created while playing the beta, you cannot get it back once deleted.
Without the file, you will not be able to get your beta unlocks.