Intergrating file upload form in Big Commerce store page

Our supplier created this file upload form: https://form.jotform.us/70755121528151

I want to implement the same form on my site. 

Can you store the uploaded files on your server?
Are there file size limits?
How do I retrieve files/associated form data from your server?

Which level of Jotform service do I need to do this?

The files are store in our servers, please note that the upload space limit per account plan is different:

Free = 100MB

Bronze = 10GB

Silver = 100GB

Gold = 1TB

You may visit our pricing page: https://www.jotform.com/pricing 

On regards of upload forms, we have created a guide that covers aspect such as how to change the allowed size limit, or file type, please check it: https://www.jotform.com/help/332-How-to-Create-File-Upload-Forms 

Please note that you will be able to download the uploaded files through the submissions page: https://www.jotform.com/help/269-How-to-View-Form-Submissions 

Let us know if you need more help, we will be glad to assist you.