MAY I HOW CAN CREATE THE SERIES NUMBER IN THE FORM?

If you mean you would like to generate a unique serial number for each submission (e.g. for transaction numbers or invoice numbers), you can use the UNIQUE ID widget. This widget lets you attach an alphanumeric code to every form submission you receive. With a unique identifier for every booking, purchase, or order, it’s easier to organize submissions and quickly access them in your records.

Here's a guide on how-to-add-a-widget-to-your-form.

Please try that and let us know if you need further assistance.