this is just my local shop example part: https://ebikes.ca/ebike-parts/battery-stuff/battery-accessories/con-dt-5pin.html
you will probably want to find whatever shop it most convenient for you, and get the piece with the same number of contacts.
you might also be able to bridge unused pins on the battery and battery receiver. I wired mine which is 6 pin to be 3 + and 3 - to not have this failure from just one pin damage. Most I have disassembled the extra pins are not connected and it just uses the outer two as single + and -.