If you have no earned income then you won't qualify for the earned income credit. Please view the qualifications for claiming the earned income credit below.
https://ttlc.intuit.com/replies/3299933
The child tax credit is a credit that is only allowed to be claimed by a person who claims a dependent. Please view the qualifications for claiming the child tax credit below.
https://ttlc.intuit.com/replies/3301702