Hey, Balyra!
Aria here, I’m on the Social Care team at Shopify.
Yes, when you’re on the dormant plan (because you’ve paused your store), you will have access to everything except for the checkout. This means you can still edit the theme, menu’s and anything else while your store is paused.
The dormant plan is $14 USD per month. You’re welcome to stay on it for as long as you need to but make sure you reach out to us if you need support with your store setup. You’re also welcome to post on the forums to ask for Feedback On Your Store before you go live. Shopify Staff, Partners and experienced entrepreneurs are likely to weigh in with their tips on making your store look professional and trustworthy.
Have you signed up for the free courses on Shopify Academy? That may help you with the store setup process, as well as your marketing.