First you will need a fill pattern to represent the Board & Batten. I have attached one pattern file.
If this isn't what you want you can download others free from the Revit Market at www.turbosquid.com.
There are at least 90 different fill pattern files that I have made available free.
Once you have the pattern file saved, you will need to load the pattern into your project. Then create a wall material that uses that pattern on its surface, and then define a wall that uses that material.