You can turn on Pre-Orders by Countries for
Enable Pre-Order by Countries for Whole Store
IMPORTANT: If this setting is made, all enabled Pre-Orders will only be available to the specified countries.
Go to Settings
Under App Settings, look for "Pre-Order Locations":
Select the dropdown and untick on "All countries":
Search the countries by typing on the search column and select the countries you want to apply the pre-order to:
Customers coming from outside the selected countries will see a Sold Out instead of Pre-Order instead.
Enable Pre-Order by Countries for Individual Products
At the Products page, select the Default Settings (or Custom Settings) button of the product you wish to configure:
At the Pre-Order tab, local Pre-Order Locations and select the country you want to apply pre-order to and select Save:
This setting will apply for individual products only.