Hi there, @florgdimabuyu.
Welcome to the Community. Allow me to share some information about linking a bank account to QuickBooks.
When you connect an account in bank feeds, QuickBooks automatically downloads and categorizes bank and credit card transactions on your behalf. These time-saving features would be helpful to you and your business.
Also. the privacy and security of your financial information is our main priority. The online banking connection is always in read-only format. It means that no one can use any of your information in our product to move any money.
You can check these articles for more details about how to proceed with linking an account, as well as creating bank rules for automation:
Drop me a comment below if you have any other questions related to banking in QuickBooks. I'll be happy to help you some more.