Slider scale feedback

OS (e.g. Win10): macOS Big Sur

PsychoPy version (e.g. 1.84.x): v2021.2.3

What are you trying to achieve?: I want to give feedback to participants after 1/3 of trials and 2/3 of trials based on their performance on a slider scale task which involves matching a mouth on a human face to a face they have seen previously. I want to tell them how many times they have correctly ‘matched the mouth’ using the slider scale component. I am new to PsychoPy, so apologies if this seems like a basic question, but I am unsure where to begin.