Jordyn D27101866, sorry that the serial number for Creative Suite 5.5 is not accepted when you use the retail installation files available at Download Adobe Creative Suite 5.5 products .
As a next step, I would recommend you transfer the installation files you were provided to a USB drive using a computer that features an optical drive. You can then install from a USB drive on the current computer, Jordyn D27101866.
If you continue to encounter errors, then please see Error: "The serial number is not valid for this product" | Adobe Creative Suite which provides additional steps on how to resolve invalid serial numbers.
Please update this discussion, if you have any questions, Jordyn D27101866.