How can i upload a photo?

Do you want to upload a photo/image to your form? You can add a photo/image to your form using Image field. You can find that field under Basic fields.

And if you want to allow your users to upload a photo to your form, then add File Upload field to your form. 

More about File Upload field you can find inside of this guides:

https://www.jotform.com/help/33-Changing-the-Upload-Size-Limit 

https://www.jotform.com/help/29-Upload-Field-Allowed-File-Types 

Hope this will help. Let us know if you need further assistance.