How do I collect my date from my form

I'm not sure if I understood your question, but you can access your submissions data and see the date submitted, this guide will help you viewing your submissions: https://www.jotform.com/help/269-How-to-View-Form-Submissions 

You may also download your submissions through any report, the report fields can be filtered and you may just include the date field. 

This guide will help you with reports: https://www.jotform.com/help/326-How-to-Create-Form-Reports-in-JotForm 

I hope this helps.