Is there a way to download a script once the video is completed for someone who may have hearing disabilities?
This is not something VideoScribe can do.
You can always add a feature request here
Although this does not exactly fulfill your request:
I recommend writing the script first, then recording the voiceover, then making the videoscribe video. If you upload the video to youtube or a website, you can include a link to the script in your description.
Or you can use text elements to subtitle your video.
Or you can use youtube's closed captioning feature to add captions.
-Mike (videoscribe user)