Hi chu_2024 ,
You can achieve the above task by following steps:
1.Create embedded variable named Slider1,Slider2 and Slider3 (as many sliders are there);
2.Write below code in JS API of Qualtrics:
Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/


});


Qualtrics.SurveyEngine.addOnReady(function()
{
// The following code selects all DOM elements with the class "LabelWrapper" and assigns them to the variable "text".
let text = document.querySelectorAll("span.LabelWrapper");


// The following lines of code set embedded data in a Qualtrics survey.
// The first line sets the value of the first element in the "text" array as the value for an embedded data field named "Slider1".
Qualtrics.SurveyEngine.setEmbeddedData('Slider1', text[0].innerText)
// The second line sets the value of the second element in the "text" array as the value for an embedded data field named "Slider2".
Qualtrics.SurveyEngine.setEmbeddedData('Slider2', text[1].innerText)
// The third line sets the value of the third element in the "text" array as the value for an embedded data field named "Slider3".
Qualtrics.SurveyEngine.setEmbeddedData('Slider3', text[2].innerText)

});


Qualtrics.SurveyEngine.addOnUnload(function()
{
/*Place your JavaScript here to run when the page is unloaded*/


});
Hope it resolves your query!!!