Each state has its own system for managing traffic violations and issuing points on driver's licenses. While some states may share information about violations with other states, they are not required to do so and generally do not have the authority to directly affect the driving record of a person with a license issued by another state.
In this case, since the speeding ticket was issued in Delaware, the points will likely be added to your Delaware driving record if convicted or found responsible. However, they will not impact your Maryland license unless Delaware shares this information with Maryland as part of a reciprocal agreement or by the driver voluntarily reporting the violation.