You can see if your job is running using the Slurm squeue command. It shows active and pending jobs. Look for the job under your user ID and note the job ID at the beginning of the row.
squeue
You can see more details about your job by using the Slurm scontrol command.
scontrol show job <JOBID>
Where JOBID is a unique, sequential number assigned to your job by Slurm and listed in the squeue command.
You can cancel your job using the scancel command.
scancel <JOBID>