Please follow the below steps to get approval quickly:-
For blogspot.com domain:-
If you don’t have custom domain, you can also get adsense approval but only through earnings tab in Blogger dashboard.
So you need to wait atleast 3 months (for .blogspot.com)
Next step is to get your site comply with AdSense policies.
For Custom domain:-
Common steps for any blogspot owners:-
7. Your content must be goodand not any drug related content.
8. If you want any support please place an order in Fiverr.
I am glad to help you…