Please let me know how can we import the tier price on store level through the csv file.
We are sorry that currently our module does not support mass import tier price per store through csv file.
However, if you would like to mass import the standard price, please take a look at our guidance for more information.
For more information about product, please refer Multiple Store View Pricing page.
If you need any further assistance, please feel free to contact us.
Please visit our site for more useful Magento 1 Extensions: https://bsscommerce.com/extensions.html