There is no input type number field in quform of wordpress plugin. Here we make input type number field with custom javascripts.

Text field to number field with javascript

#quform #Wordpress #Plugin 

Add new text field and keep its class name  "qform-text-to-number" , then add a html in your quform.

then keep this code in javascript 
document.getElementsByClassName("qform-text-to-number")[0].type = "number"