My friend told me he got something from Costco that has a value of 40 for nutrients. He said it's suitable for tropical fruits. He said his trees have a lot of fruits. He does not remember what the name is. I never see any fertilizer dry or liquid with that high value

I like to know what is the best fertilizer to use specially for tropical fruits?

The one that says its for Citrus, if that is what you are growing.

I have guava, lemon, Longan, Durian and pear. What's the NPK values please?

I have no idea. I don't grow citrus or other edible crops. Google search citrus fertilizers. I am sure there are a lot of them available

I would use a product by Espoma like this one.
https://www.espoma.com/product...

Costco usually carries Miracle Gro.