The charge port is soldered onto the board and is not a repair you should DIY as you can easily mess the board up and cause more damage and requires thousands of dollars in tooling. Send it to a board repair specialist like iPad Rehab, STS Telecom, Rossmann Repair, or VCC Board Repairs. All of them has youtube channels you can check out. I personally use VCC for repairs I can’t handle in my own repair shop so they certainly know what they’re doing but you can’t go wrong with either of them. But if you don’t mind me asking, why are you replacing the charge port? Do you need to wiggle the cord just right to get it to work?