vaguemoon2 Said:
"Macbook Pro M1 13inch bezel cracked: [...]Macbook Pro M1 13inch bezel cracked: Forgot to mention this is the 7th macbook I have owned over more than 20 years and never have I had any problems except battery dying and just plain old age. Is this strip plastic or glass?"
-------
Get this Serviced:
From what you have provided, your bezel has apparently cracked. So, it is time for a new screen. If you have not had this replaced, then it might be replaceable by Apple, free of charge --but that is Apple's call.
Perhaps this is a Faulty Device?:
How old is this Mac? Note that you have a one-year, out-of-the-box, limited-warranty with this. So, if it is covered under warranty, then see if you can get the screen replaced. Being faulty, it likely would be nothing on you. Ask Apple Support for a new screen.
--- Contact Us - Choose Locations
--- Proceed from there as Necessary
NOTE: Due to the Coronavirus Pandemic, calls are taking a bit linger to get through. And, that makes sense, because many are at home working out-of-the-house or are taking classes over-the-web, this they have more time on their hands to contact Apple Support. So, it might take a bit to get through to Apple Support. But, just stay on the line, and someone will be with you :)