My 1099 R shows I paid $446.40 to WI though I was not a full year resident. I uploaded the form via turbo tax. Where can I request refund?

To request a refund, you will need to file a part-year Wisconsin tax return. While you may not be required to file a tax return based on your income (the requirement is $2,000 or more for a part-year resident), this is the method to obtain a refund of your tax paid.

Here is some information you may find helpful: How do I file a part-year state return?