If you want to finance windows, you'll need a credit score of at least 630. This is because windows are considered a home improvement, and lenders typically require a higher credit score for home improvement loans. However, there are some lenders who will work with borrowers with a lower credit score, so it's still possible to get financing for your windows even if your score isn't perfect. There are also other options besides traditional loans, such as home equity lines of credit or personal loans. So, even if you don't have the best credit score, there are still ways to finance your windows. Talk to a lender about what options might be available to you and see what would work best for your situation.