CAS Letter (UK)

I got an admit from the University of Leeds but they're asking for final transcript. I'm in my final year and the final year examinations of my bachelor's are to be held in the month of july and results will be declared at the end of August. So, anyone can guide me through the process that how much time will it take university to generate CAS letter so that I can apply for visa. Besides, is there any chance to convert the conditional letter to unconditional by providing them bonafide letter or projected score letter? #UK #CASLetter #CAS #unitedkingdom #Msc #datascience #analytics #Fall23