Dear webmasters,

I have created an adsence account back in 2017. It was at that time automatically approved and not hosted. As i have created a website, i want to place some adsence codes in it.

How do i need to proceed ?
Do i need to add first my website on the website list then get an ad code and paste in my website ?
Or i can get directly an ad code and paste it in my website without the need to add the website on adsence list
If i have to add my website, is it going to be reviewed by adsence ? Or there is no website review for old adsence account holders ? specially 2017 accounts and below.

Thank you for your help in advance