Before we dive in to your concern, please note that I used a translator so I can understand your question. If my understanding is wrong, please comment below so I can correct myself.
A credit note is a notification that someone receives a credit or refund. You can record it using credit memo if you're the one who sent it. Vendor credit is what we can use in recording it if you're the one who received the refund from your vendor. These are the steps to follow:
Credit memo (You'll see Credit Note if you're using a non-US version):
Go to the + New button and select Credit memo.
Select the Customer and enter the Date.
Enter all details needed, click on Save and close.
Vendor credit (Supplier credit for non-US version):
From the + New button, select Vendor credit.
Select the Vendor and the Date.
Provide the details required before clicking Save and close.
You can pull up the Transaction List by Account to review all the credits or refunds you recorded in QuickBooks. Simply search and select the said report in the Reports tab.
Please comment below if you need more clarifications. I'll be here to help you.