Hi Charan,
you don't need sudo to run Filebeat on the lab environment. You can use the instructions from lab 2 step 4 for downloading and unpacking Filebeat as follows:
curl -L -O https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-7.2.0-linux-x86_64.tar.gz
tar -xzf filebeat-7.2.0-linux-x86_64.tar.gz
cd filebeat-7.2.0-linux-x86_64
Best,
Andre