One convoluted approach...
1. In Word compose the text with strikeout - white on black background is best, perhaps a BOLD font
2. Copy just the text using Windows snipping tool

3. In Videopad add the snipped clip - from the PC's Pictures folder - to the overlay track and key out black with the Chromakey (green screen) effect (Settings shown below are a suggestion)
4. Add the Motion effect and program a scroll with vertical set to 100 at the beginning and -100 at the end

Other effects can be added, as with any other clip. Try Color Correction or Sharpen, to make the text stand out.
Strikeover.mp4