You must be getting an error similar to the screenshot below.
npm start is a command that is used to run a node-based server so that it can respond to requests and provide responses.
Step 1) Check if you have executed ‘npm install’ prior to this command. If you would have done the
npm install command you should see a
node_modules folder in your current directory where you can go from
File -> Open Folder -> <the cloned Qprofile folder> -> portfolio-frontend.
Step 2) Check for your current directory using
pwd command in terminal and verify it looks similar to:
Step 3) If the above conditions look fine, execute the command
Step 4) It will take some time to run the command due to its dependencies. On successful execution, you should get something that looks like: