I just lost 24 rep points and I don't know why?
One of your answers was deleted
You wrote a question here1, asking whether Turbo Boost could be used to jump a car. You also answered that question.
Why was the question deleted?
The deletion reason was given as RemovedAbandonedClosed. As noted here, a question is deleted:
If the question was closed more than 9 days ago, and ...
not closed as a duplicate
has a score of 0 or less
is not locked
has no answers with a score > 0
has no accepted answer
has no pending reopen votes
has not been edited in the past 9 days
All of these conditions were met on your question, and so the Community user deleted it.
At some point, you should have seen (or should see) a gain of 2 reputation as well, since your net -2 on the question should also be reversed.
If you wish to view your deleted posts, you have several options:
If you have more than 10,000 reputation the
deleted:1search term should be of some assistance.
If the question was deleted recently, a high-reputation user might be able to see it, if you really need access.
1 link only available for 10K+ rep users