The bid meaning in Freelancer is similar to responding to a job posting anywhere else. A potential employer publishes an ad when they want to hire a new employee. They describe the job and the required skills. Potential employees then submit their CVs or resumes to apply for the job.
A bid in Freelancer is not much different. Simply put, clients post a description of their jobs on Freelancer.com. This posting creates an “auction” for skilled help to complete those projects. Each project requires specific skills, so freelancers with those skills “bid” on the project. And that’s why it is called “a bid in Freelancer.” In reality, it is just a way to apply for the job. The biggest difference is that a bid in Freelancer allows you to work temporarily with the client on a specific project. You may earn the opportunity to be rehired, but this is not always the case.