Hello, how do I change the email message from a Kintone App?
I want to correct the scheudle spelling mistake.

Hello, how do I change the email message from a Kintone App?
I want to correct the scheudle spelling mistake.

From the email message, I assume this notification is from the Per Record Notification, but please check the Reminder Notification if I am wrong.
You can see the "Summary" text box under each notification; from there, you can change and edit the message displayed.
Please see the following help page articles for reference.
I hope this helps.