I’m able to pull in a remote repository but unable to add the database and actually view the data in the tables
Not sure what you are expecting to do but neither GIT or GitHub/GitLab/BitBucket/You name it are meant to work with database.
You can still use GIT for the versioning of your SQL files but you can’t exploit any data in there.
I don’t know what course it is about but by reading people in here having taken the DB course, it seems to be MySQL. So you need to install it. and import/execute the sql file in your database.
To add content to GIT, should you not be comfortable, use a tool to help. I personally use GitAhead when I use a GUI but there are other.
Also you need to own/have access to the git repository.
Otherwise you need to perform these basic steps:
git add filename
git commit -m "Commit message"
git push -u remotename branchnameif you push it for the 1st time.