Sporty includes a web Form Builder utility that allows you to add your own question fields to a form. You can set the type of answer you expect (eg Yes/No, Multi-choice, etc) so that answers are consistent for you to sort and search later.
To edit a form go to Dashboard > Online Registrations > click the edit (pencil) icon next to the form name.
This will take you to the form editing page. For detailed instructions on how to add sections and questions to your form, please see this support article.