Hi Stephaniemajor99 again!!
First of all, I'm sorry for your loss.
I am assuming that you are a US Resident. In the US, life insurance proceeds received by the beneficiary are not Taxable Income. It would not matter if your father was a non-US resident, as it is US based life insurance proceeds, and the recipient (you) is a US resident.
See this website: https://www.irs.gov/faqs/interest-dividends-other-types-of-income/life-insurance-disability-insuranc...
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