Don't panic.
Scabbing is common and sometimes the colors will fade a bit as well and require some touch up. Although yours is black ink, so it will probably be OK.
Just don't pick at it. Let the scabs fall off on their own and follow the instructions the artist gave you. You can usually use vitamin E oil or aloe vera to moisturize the skin without a problem after the tat has healed completely and the scab has fallen off. If you moisturize before, it will take longer for the scab to fall off.