I bought some inventory on eBay out of Canada and paid in CAD money. How is that converted to US dollars?

You would use the exchange rate which was .737626 on June 30, 2020.  This would equal $44.35 (60.12 x .737626)

I should have put how do I get the correct US value from 2020?

Breakdown was

C 40.00 Items

C 18.00 Shipping

C  2.12 Tax

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C 60.12

I paid tax on inventory out of Canada to so that's strange. Do I claim that tax under my COGS?

Thank you for the answer / conversion however should the out of country tax be included in the deduction?

Yes, you should include the Canadian tax in your Inventory Cost and it will ultimately be reflected in your COGS.