Allow me to share some details of what will happen to your data after your trial subscription has ended.
You'll have 90 days of read-only access to your data after the trial subscription expires. This means you can get some of the data of your company. To do that, in your QuickBooks Online account close the subscription pop-up window and go to Settings. Then, select Export data and choose the data you'd like to export. I've added some screenshots for additional reference:
Also, QuickBooks preserves your company data within a year. That said, you can still resubscribe without losing your data. To know more about the process, you can check out these articles: