Hi Barbara,
Assuming you're talking about the complete charging port assembly - the same one that's advertised here on iFixit - then no, you do not need to do any soldering to replace it.
After going through the Daughterboard Replacement guide, here are the tools you need.
- Heat source: heating pad / iOpener / heat gun / blow dryer
- Opening pick(s) / plastic card
- Suction cup
- Phillips #000 screwdriver
- Spudger
Samsung Galaxy Tab S3 Daughterboard Replacement - iFixit Repair Guide
It appears that iFixit is out of stock on those daughterboards, but you shouldn't have any trouble finding a replacement on places like Amazon, eBay or AliExpress. Here's an example.
Charging Port Board For Samsung Galaxy Tab S3 9.7 SM-T820 / T823 / T825 / T827
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
2