YITH WooCommerce Points and Rewards
With YITH WooCommerce Points and Rewards plugin, you can set up standard points to be assigned automatically for each purchase.
In this use case, I assign 1 point when 10 EUR is spent on my store:
On the product page, customers will be able to see the original amount of points and converted rewards that can be redeemed if they buy a particular product.
When they switch to another currency, they can easily see the points and the value of the points in their own currency.
The amount of points are unchanged, while the worth value is converted to the local currency so that the customer gets an idea of how much they will get.