How many can I send to be filled and resend after with a confirmation?

There is no limit to how many times you can share the link to your form.

You can find the link to your form on the builder page.

Where-to-Find-My-Form-URL

However, as for receiving form submissions, the limit is based on the plan subscription you have for your account.

You can check the limit and features of our plan subscription on our Pricing page.

https://www.jotform.com/pricing/

Feel free to let us know if you need any further assistance.