Store Pickup Extension for magento 2 - Cynoinfotech
https://www.cynoinfotech.com/product/store-pickup-magento-2-extension/
The Magento 2 Store Pickup extension allows customers to place orders online and pick them up from the nearest offline store with the most convenient dates and times. The Magento 2 Store Pickup module allows your customers to choose the shipping option as physical-pickup from their nearest store. Admin can easily configure store pickup locations by applying necessary settings like country, price calculation and delivery methods. Admins are able to select multiple countries they wish to allow store pickup.