Using the Title Templates
Select "TITLE" at the top, pick a title template that you like. (or press CTRL+T )
Select a Title template that you want form the preset ones
Now you can edit the parameters. For this document, we are going to focus on "FILENAME" and "LINE 1:"
Give it a FileName (this is stored in the OpenShot project file for future use should you save it)
Adjust the line number, in this case you can adjust "line 1" with the element you want.
Click on SAVE
Your title will now appear in the "Project Files" window
Click and drag that title to your timeline
Your video preview will show the title
By layering elements below the title, the title will overlay on those video elements
Result