Hello @weyhe
Welcome back to the Prismic community, and thanks for reaching out to us.
Are you getting any sync errors on the console? Prismic and Shopify sync happens every 30 mins. Would you please check our IF troubleshooting guide that might be helpful: Integration Fields Troubleshooting guide?
If it still doesn't solve your issue, I'd be happy to debug it.
Thanks,
Priyanka