If you have a question about a specific challenge as it relates to your written code for that challenge, just click the Ask for Help button located on the challenge. It will create a new topic with all code you have written and include a link to the challenge also.
You will still be able to ask any questions in the post before submitting it to the forum.
i used to see the ask for help bottom but i don’t find it anymore !
You need to try to submit code a couple of times before the button shows up.