If you want all products to have Use Default Value as CHECKED, then run below SQL in the database:

DELETE FROM `catalog_product_entity_text` where store_id = 1;
DELETE FROM `catalog_product_entity_datetime` where store_id = 1;
DELETE FROM `catalog_product_entity_decimal` where store_id = 1;
DELETE FROM `catalog_product_entity_int` where store_id = 1;
DELETE FROM `catalog_product_entity_varchar` where store_id = 1;

If you want all categories to have Use Default Value as CHECKED, then run below SQL in the database:

DELETE FROM `catalog_category_entity_text` where store_id = 1;
DELETE FROM `catalog_category_entity_datetime` where store_id = 1;
DELETE FROM `catalog_category_entity_decimal` where store_id = 1;
DELETE FROM `catalog_category_entity_int` where store_id = 1;
DELETE FROM `catalog_category_entity_varchar` where store_id = 1;