Your Compliance Manager assessment score is shown in the exhibit: 

To increase the “Your points achieved” score, you must:

Answer options:

A.Perform an assessment
B.Assign action items.
C.Generate report
D.Review Microsoft actions

Correct Answer: B 
You can increase your compliance score by going to “Your improvement actions” and take improvement actions to implement controls and improve your compliance score. This is done by assigning an action item to the people responsible for the improvement action. The score will improve when remediations have been made.
In the exhibit you have chosen the improvement action “Assign account managers”: 

Option A is incorrect. An assessment checks your service against a certification standard or data protection regulation. In this scenario you have already performed an assessment, and creating a new one will not improve the mentioned points.
Option C is incorrect. This will export an Excel file with detailed assessment information of Customer managed and Microsoft managed improvement actions.
Option D is incorrect. The Microsoft Actions lists the status of improvement actions managed by Microsoft. As these are controlled by Microsoft, you cannot improve your score here.
Reference: 
To know more about compliance manager, please refer to the link below: 

https://docs.microsoft.com/en-us/microsoft-365/compliance/compliance-manager?view=o365-worldwide