This feature is available in the paid version.

let incrementCount = parseInt(tc.getVar('incrementCount') || "0");
let code = tc.response.status;
 
if(incrementCount <= 3 && code !== 200)
{
    incrementCount = incrementCount + 1
    tc.setVar('incrementCount', incrementCount)
    console.log("retrying request", incrementCount);
 
    await tc.delay(incrementCount * 1000); // exponential delay of 1 secs
    await tc.retryRequest();  // <--- retry request
}
else
{
   tc.setVar('incrementCount', 0);
   console.log("reset incrementCount = 0");
}