Repairing/salvaging fan forced heater
OK, the female spade connector on the red wire is fried. If there's enough slack in that wire, you can cut off the connector and burnt wire. Go to an appliance repair store to get a match on the old connector. You could probably find similar ones at your home store but the ratings might not be the same and you'd also want a shrink tube. These connectors are crimped on so if you don't have a crimping tool buy one or have the repair guy at the store crimp it on and shrink the tube.
Now the bad news. It looks like the problem started in the white terminal block where the rivet is attached to the male connector. This is where the arcing started and heated up the entire connection. The inside of that block is probably damaged beyond repair and would have to be replaced too. Getting parts might be a problem.
If you decide to dump the whole thing, most counties/townships have local dumping stations where you can drop off old electrical appliances for recycling.