Welcome to the Community. QuickBooks is a robust program that helps you manage your accounting. I'll be happy to provide the info you need so you can get back to doing what you enjoy.
Based on the details you've provided, I recommend converting your data from Quicken to QuickBooks using the conversion options provided in this article here. Once you've successfully converted your data, you can open the file in QuickBooks. In case you need additional assistance with this, I recommend contacting our support team. You can contact our support team by dialing 1-833-317-2226. A specialist will be able to share your screen and help you get to the bottom if this ASAP. To find out more about our hours of operation, check out this link here.
You're more than welcome to keep me posted on how you make out. I'll be one message away in case you need additional support. Otherwise, I wish you a great rest of the week.