I earned retirement lump sum from a company in Japan and I paid taxes to Japan. I would like to know how to input this earning on turbotax and how to reduce my tax in US?

I lived in US for 365 days in 2020. I worked long years for Japanese company in Japan and worked several years as expat in US. I left the company in 2020 and I got retirement lump sum. I did not live in or visit Japan in 2020, but I paid withholding tax to Japan, for the income.
Could someone tell me how to input this income in turbotax to maximize my benefit?