Thank you for reaching out to the Community. I’d be happy to provide some assistance with this request, to ensure it gets resolved.
As you have since closed your shop ,you will want to connect with our support directly to have your domain transferred. They will be able to get you authenticated, as I wouldn’t have access to any account details here through the Community. From there, they will be able to provide you with access to the shop to successfully transfer your domain away from Shopify.