My phone charging jack is not working

@sohaelkhan check the charging port. Clean it of any debris etc, use a few puffs of air to clean it out. Check for any bend, broken or corroded pins. If all of that looks good it maybe time to replace it.

Your charging port is soldered to the charging board. You can replace the whole board unless you have access to the right tools and skills to replace it. You will of course also have to have a replacement port. It should be easier to replace the board.

Since iFixit does not yet have any guides for this, use something like this video to see how to remove the board. The charging board itself is available at plenty of online sites.

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.