this is called sponosr image ads and here are the rule for it
- there a max 4 per hour even if you see more than that it will count only those 4
- 20 per day and even if you see it more than that it will not count it more
- now for the thing i guess it affect you that not cause you see this image it will count it depend on what the advertiser choose to whom (which country) they want to promote so if you are not from those country it will not count also
to know which ads for your country check this one https://sampson.codes/brave/ads/my_region/
check each one if it’s type say new tab page then it’s the sponosor image
hope that help and have a nice day 