The Try Question and the Skip Question buttons are only available for the editor of the interactive video. Your viewer won't see these buttons.
If you want to know exactly how your viewers will see the video, you can use the Preview mode. As you can see, the Try Question and Skip Question buttons will have disappeared.
How to make these buttons
Do you also want such a button for the viewers of your video? So that they can also skip the question? Here's an insider's tip on how to create one. Go to the advanced settings of your question interaction and turn on the back button. Rename the back button to skip question and set the action type "Jump to specific time in the video". Now when the viewer clicks this button, he jumps to another moment in the video. Make sure there is at least a second between the question interaction and the new time.