As Mr. Wolak has already noted, as of today's date, the latest NVDA released version is 2019.3.1
For completeness, here are the two commands you can use to check what version you are currently running and have NVDA check if there's a newer version, and install it.
Check Current Version (About) NVDA+N,H,A
Check for Updates NVDA+N,H,C
Brian - Windows 10 Pro, 64-Bit, Version 1909, Build 18363
Power is being told you're not loved and not being destroyed by it.