Assuming you mean 20 tons=40k lbs, this is around 120k peaches.

You would need revenue to cover such an expensive mode of transportation. Flying will probably be on the order of $20k. So you need $0.5/lb just for flight costs even if you can sell all of your peaches.

I live in Canada. For reasons you might be aware of, me and my neighbors avoid buying any wine, fruits or vegetables that come from the USA nowadays. The USA are not our friends anymore.

Today I bought very nice oranges from Spain, and super sweet and tasty fresh blueberries from Morocco. Price was same as usual in the supermarket.

I am sure the californian peaches could be sold at a reasonable profit , somewhere in the world, if there was actual demand. The problem I see : no demand for US produce.