Hi,
Yes, you need to import listings using a CSV file. Please see this documentation for details: How to set up and import listings - HivePress Help Center. Also, check out this sample CSV file sample.csv - Google Drive. However, please note that you can only import listings. That is, if you need to import, for example, vendors, there is no such functionality, it will require the use of third-party plugins such as WP All Import (note that this plugin requires field mapping).
I hope it helps