We can work on this together so you can successfully add a product or service to your account, Kyle.
Access your QuickBooks account using an incognito or private browsing window. This will stop data from being stored and could help identify the issue more clearly.
If you can successfully add a product or service, return to your usual browser and clear its cache. Sometimes, system odd behavior occurs when a browser accesses pages repeatedly, possibly due to corrupted cache files. Alternatively, you can try using other supported browsers.
Here's what else you should know when adding products or services to your account: Add product and service items to QuickBooks.
Next, you can run the Sales by Product/Service Summary report by heading to the Reports tab and selecting it. This can help you see the total sales for each product or service which includes the quantity, amount, % of sales, and average price.

You can drop by the Community anytime for additional assistance with navigating your account. We're always around to help.