The National Centre for Disease control has taken to their official twitter page to tender the situation report for July 12th 2020.

According to reports, a total number of 571 new cases were confirmed with the total number rising to 32,558
Breakdown of new cases across all affected states are as follows; 
Lagos-152
Ebonyi-108
Edo-53
Ondo-46
FCT-38
Oyo-20
Kwara-19
Plateau-17
Osun-14
Bayelsa-14
Ekiti-14
Katsina-14
Akwa Ibom-11
Kaduna-11
Rivers-11
Niger-10
Ogun-7
Kano-6
Cross River-4
Bauchi-2

Confirmed -32,558 confirmed
Discharged -13,447
Deaths -740

Total number of confirmed cases in Nigeria are broken down across states in this infographic below;
Source : NCDCgov via twitter