Being depressed because of the test scores is not a very productive strategy. It doesn’t help anything. I do not know the difficulty level of the question paper that you are solving and hence I can’t comment whether it is a good score or bad. You should concentrate on the relative score rather than the absolute one. This will help you assess yourself better.
Since this year’s prelims is barely days away, I would advise you to stick with whatever strategy you have been following and revise as much as possible before the exam. However, for future purposes, what can be gleaned from the current test series is to save the scores and make sure that you can beat those scores the next time.
May because of my engineering training, I always had this habit of recording every single data point that I generated regarding the CSE and this had helped me immensely to strategize my studies. For example here are the scores of the prelims test series that I had written before the Preliminary Examination.
I have this document still in my google drive. After all without data, what can you analyze?
It helped me a lot to evaluate myself and also to set new targets. I suggest you too take away something productive from your experience. It is the smarter person who emerges successful in this exam.