The job ID is always stated in the backend table for jobs (/admin/jobiqo/jobs).
Another way is to download the jobs and look at the column job_id. Please also see this article to find out how you can easily export jobs: "How can I export jobs?".
🔥Quick tip:
You can directly jump to the job detail page if you access the URL '/node/PLACEHOLDERID'. This trick works for both your frontend and backend doamin.