I no longer use a traditonal cell phone, so I am trying to connect these two together and for my watch to function just like it would with a phone. I've tried several different things to no avail. Any help would be appreciated.
You could sideload the Galaxy Wear app. The best way to do this is to get a Samsung phone (it doesn't need to be yours) with the app and send it to your Tab S7+ via an APK sender app downloaded from the Play Store. I would NOT recommend looking up a sketchy download link for it online. Those usually contain viruses, or are an old version. It might be possible to download the Galaxy Wear app from the Samsung Store or the Play Store directly.