sorry. now i got this. please ignore.
i have to use jump server in order to login.
i found the way to do this task:
az account get-access-token
az account set --subscription <>
az vm list
az vm stop -g KML_RG_MAIN-2137AF981DB349B8 -n devops-vm
az vm deallocate -g KML_RG_MAIN-2137AF981DB349B8 -n devops-vm
az vm delete -g KML_RG_MAIN-2137AF981DB349B8 -n devops-vm