Hi JOSROL,
The following link provides a script for on-premise SharePoint 2010 about Bulk Site Collection Creation by Importing CSV file:
gallery.technet.microsoft.com/.../77ed76b7-0146-44af-a9d6-e00261a2fb0e
However, PowerShell is not available in current SharePoint Online 2010. Therefore, the script combining PowerShell cmdlets cannot be utilized for SharePoint Online 2010.
Thanks,
Nancy Xie