Put some aloe on it.

Just kidding, it's ruined. A long time ago I had to glue some shoes back together. Can't remember the details. But I got impatient and put the shoe in the microwave to speed the glue up. The shoe caught on fire and was ruined.

That's why throw cushions were invented....

Buy a new couch, reupholster the one you have (depending on the style it might be possible, but guaranteed to be rather expensive).

Unfortunately, burn marks and burn holes are a couple of the rare things that universally will damage furniture of all material types, that cannot be repaired. Cover up, yes. Repair, not so much.

*By repair I mean the item returns to its original pre-damaged appearance, without any visible signs of a fix or repair.

They make some really nice couch covers if you don't want to buy a new one

1. Use nail scissors to cut off the burned edges of the hole.
2. Cut a small piece of fabric from the bottom of the chair or couch for a patch.
3. Carefully stick the patch through the hole so that it's behind the hole, and dab fabric glue along the inner edge of the hole to hold the patch in place.

It's a burn mark and not a hole as far as I can tell from the first post....