magento2 – Empty salable quantity

Recently I migrated our database from Magento 1.6.1 to Magento 2.3.3 now everything seems OK but after trying all the functions, I discovered that every time I add a product in the cart it says that the product is not available although I know there are quantities for this product below, this is what the grid of my product looks like

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As you can see in the salable amount it says No manage stock Now when I check the actual product here is the content

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As you can see, the quantity of the product is still 500, but when you look at the Salable Quantity tab. No value

How can i fix this?