Clothes getting caught in the front of the dryer indicate a problem with front felt seal (Key 20 in the first image below). Metal scraping on metal due to the deteriorated front felt seal could cause a screeching noise.
You could also have a problem with the ballhitch (Key 32 in the second image) and the drum support bearing (Key 12). This assembly can also make a squeaking noise. Try opening the dryer door and pushing up on the inside top part of the drum. If you feel a large amount of play in the drum, this would indicate a likely problem with the ballhitch.
Friction problems in the front seal or the ballhitch could cause the belt to squeak. Although the belt may need to be replaced, it is not likely to be the primary cause of your problems in the dryer based on the symptoms that you are describing.
Another problem that could produce burn marks on the clothes would be overloading the dryer. A shorted heating element could also cause burn marks on clothes.
I recommend calling a service technician to diagnose and repair these problems in your Kenmore dryer. If you want to attempt this repair yourself, resubmit your question with additional details for more technical help.