Hi Omar,
The B1 series is really basic (1 core).
Just to run the service I'm taking an educated guess that it requires this much compute just to run the service and its basic necessities (OS, services).
Try bumping it to a different service plan and see if the usage changes.
If this is helpful please accept as answer or upvote.
Best regards,
Dillon Silzer, Director | Cloudaen.com | Cloudaen Computing Solutions