So VS Live Server will spin up its own server and look for a free port. You local host address seems to be
127.0.0.1, which is typical. Pinegrow grabbed port 40000, while VSCode grabbed 5500.
When you start browser-sync it should give you a message - the first line should tell you what it is proxying. It should match what the browser bar says if you open a Pinegrow page with BrowserSync turned off - so
Next there will be a table of access URLs. The top one is the local access for your web pages - probably
http://localhost:3000. Might be different depending on BrowserSync set-up. That is where your live previews should show-up.
Where you might be having problems is the BrowserSync settings in Pinegrow. Under the Topbar eye icon the last menu item is the settings. the URL in that setting must match what BrowserSync gave as the Local URL.
Hope this helps,