mongoimport is not recognized
From version 4.4 onwards, you have to install MongoDB tools separately
https://www.mongodb.com/try/download/database-tools?tck=docs_databasetools
Unzip and move the contents within
path_to_your_extracted_foldermongodb-database-tools-windows-x86_64-100.3.0bin
to
C:Program FilesMongoDBServer4.4bin