Cat ear problems need help asap

So I came home a few days ago to see my cat with a noticeable scrap from the corner of his ear. today it has not gotten much better but I noticed some dry bumpy stuff in his ears (almost looks like exhema) I really don't know if I should bring him in or not. I am very worried about it. it was also very difficult to get pictures so this is all I got.

sonialc,

If you are worried and not sure about what's with the problem ear, bring your kitty to the vet.
There's pretty much nothing you can get here to help diagnose the problem and get advice on what medication to administer just based on a photo. Bring in to the vet before it gets worse and have peace of mind.

And welcome to the Catsite

this is the inside of his ear.

The ear on the first photo looks red and raw. But the inside hopefully it's not ringworm.
It's better to bring in to the vet.