How do I get the totals of items sold in my "view submissions" reports? It shows the item sold, but not total purchased or quanitity purchased.

If I understand correctly, you are after the report on the payment field on your form.

Unfortunately there is no option to separate the data of payment field in the view submission page and in a report.

A workaround you may want to check is using custom payment form. That is, the payment field will only get the payment amount from separate fields (basic elements).

You can review the resolution/workaround created by our colleague on this thread 

https://www.jotform.com/answers/1496534-Split-payment-field-data-on-reports

I hope this help. Let us know if there is more we can help you with.