Am I genuinely cooked?

I just finished my IELTS test and wasted too much time on writing task 2. Therefore, I only managed to make a really short and somewhat vague conclusion. I'm not terribly optimistic about my writing results (I need at least a 6.5), so I'm trying to predict the highest score I can get with said conclusion.

Has anyone in this subreddit faced a similar problem? If so, what score did you end up having and what did you do to ace it at your subsequent attempts? (developed body paragraphs with a less than ideal conclusion)