currently my SharePoint 2016 farm build version is 16.0.4327.1000.Can you please suggest me which patch do I need to install to get latest version farm build version
Oh, Your build number refers to the
SharePoint Server 2016 Release Candidate that not supported to be upgraded to RTM!
Note: In some rare cases, you may installed RTM but it shows the RC build number! it's a bug! and in this case, there is no issue to install the latest CU update.
So if you are sure you already installed the RTM version but it shows RC build number, go ahead to install the latest CU.
Otherwise, The available solution is to download and install a fresh the Sharepoint Server 2016 RTM. but you can't upgrade your current RC farm to RTM farm.
Per my test, we can install pu for SharePoint Server 2016 Release Candidate.
To get latest version farm build version, you need to install November 2018 Patch.
You can download November 2018 Patch (Language Independent Files) from here:
Besides, SharePoint 2016 Builds List for your reference: