Sorry wan* at explaining.
When you get a BB it comes in 2 pieces. The whole solid BB and the plastic shitty part that is basically just a guide.
If you can, bish bash bosh the frame into a round as possible shape.. either tidy the threads if need be with a needle file or a tap.. and force the plastic side in.
If the drive side is 100% ok.. the frame will work.
try & use a copper hammer