Status for all planned and unplanned events for Apple Services.
www.apple.com
No widespread outages.
As is so often the case, most likely it is a localized problem perhaps in your region or maybe with your Internet service provider. The latter is the most likely culprit.
I’m in Upstate NYS and had some problems yesterday for about four hours then received a bunch on emails at once in late afternoon local time! I thought that was weird!