Elias here with Shopify Support. Thank you for reaching out!
Typically, domain transfers can take up to 20 days from the time of initiation until the transfer is complete. However, since you're seeing the "SSL Pending" status, it looks like the domain transfer has completed. Although provisioning the SSL is usually quite fast, often finishing within a couple of hours, it's possible that it may take up to 48 hours in some cases as well. That being said, has the SSL status changed for your domain since then?
If the SSL status hasn't changed, I'd be happy to take a closer look and loop in our Technical team if needed.
Looking forward to hearing from you!