Hello Fidgeter, I hope you are well. Thank you for joining the GoDaddy community. SEO for GoCentral website builder is little more difficult than WordPress. It requires everything manually. Please follow these steps to rank your GoCentral website on Google 1st page.
1. Google My Business submission
2. High-quality website content
3. Create high authority and relevant backlinks
4. Guest posting on relevant sites
5. Social Media profiles
I hope if you follow these guidelines you will get ranked high within 2 months. Your work will be genuine.