No it will only be reviewed.
Adsense will decide if it wants/ needs it and will respond within 6 weeks.Blogspot com blogs can only apply from Blogger.
When the earnings tab in the Blogger dashboard is activated, you follow that process and Adsense puts in the code for you then you wait for a review, up to 6 weeks.
Also — Be sure you did not change the robots txt from the default.
Log in and go to Settings >> Crawlers and indexing
If either of these settings are Green then:
Uncheck YES for Custom robots header and Custom Robots txtThe green toggle buttons should be set to OFF.
That will revert to the correct robots.txt