If you only want your video to be available on YouTube but not Vevo apps/linear:
After successfully delivering the video as you normally would, set the video to "unlisted on Vevo" in Vevo Backstage. This will make the video unavailable on Vevo Apps.
If you only want your video to be available on Vevo apps/linear, but not on YouTube:
When delivering the video to Backstage, do not deliver the video to its YouTube channel, instead, deliver the video to the channel "CTVDeliveryVEVO". This will ensure the video only goes live on Vevo apps, and not on YouTube.