It's unusual to get a message saying the Play Store needs updating because, I thought it's always done automatically?? Only the Galaxy Store tells me occasionally there is an update available . Have you tried restarting/rebooting your phone to see if the message goes away?
Thanks for your messages. I appreciate it. I also thought the Play store would update automatically. I don't think I am hacked because my partner also has the same message. I will just leave it alone for now. Hopefully it will disappear by itself.