side by side text boxes for one question?

This isn't possible using the default Qualtrics settings. However, you can use elements in the question in HTML and then store their value using embedded data. This is the demo for the code below:
Question HTML:
Please enter your value


Out of

Question JS:
Qualtrics.SurveyEngine.addOnPageSubmit(function(){
var my_val = this.getQuestionContainer().querySelector("#my_val").value;
var max_val = this.getQuestionContainer().querySelector("#max_val").value;

Qualtrics.SurveyEngine.setEmbeddedData("my_val", my_val);
Qualtrics.SurveyEngine.setEmbeddedData("max_val", max_val);
});