I am a new homeowner so I am pretty new to these tasks at hand but I recently moved into a newer build (2020) that has an attached garage with drywall already put up in it but that's about as far as it goes. It hasn't been painted or sanded so I am trying to get some help on figuring out what I all need to repair some of the images below (sorry for such beginner questions):
As you can see, the paper part of the drywall is peeling and along the bottom there is a gap. This gap extends through the entire garage and there are a few places where the drywall paper is peeling like this. I'm not really interested in installing moulding so should I just fill it with silicone? What would you recommend?
This drywall tape is visible all throughout the garage and I am not sure if I can just put primer over it and then paint without having visible lines.
Where the garage frame meets the interior drywall there is a gap, similar to the floor. Would the same solution be used here too or should I do something else?
Thanks for all of your suggestions!