Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
What is the exact product name that you purchased? Office Home 2024? Office Home & Business 2024? Or something else?
Unfortunately, the error message you cited indicates a problem with the product and its product key.
If someone sold you Office Professional 2024, for example, and led you to believe that you purchased a consumer (home use) product, you need to ask for your money back. These are in fact volume license versions which are only for organizations/businesses.