@srijayaharsha to replace the charging port board, use something like [https://www.youtube.com/watch?v=BaG69xQc9hw|this video]. The board is available at many place. Just do an online search and select a vendor that appeals to you.
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.