Repairs for Apple Watch
my Apple Watch’s band disconnected which has resulted in the screen being smashed. How long/how much would it take to get the screen repaired?
could I trade my Apple Watch in for a newer one?
Apple Watch Series 4, watchOS 7
Question marked as
Top-ranking reply
Sorry, but Apple won't accept a damaged watch in trade. And Apple doesn't actually replace the screen on a watch. They instead, offer you a like new replacement for a fee, which you can find in this link for reference --> watch Repair - Official Apple Support
As you can see, an Series 4 watch repair cost starts at $299 and goes as high as $399, depending on the specific model you own.
Personally, I would take that money and invest it a newer watch and recycle the watch which is damaged. But that is me and certainly not what you need to do.