"To submit a bid" means to present an offer or proposal to do a job or provide a product or service, typically in a competitive setting such as an auction or bidding process. Full definition
You can participate in an auction by submitting a bid for the security you want to buy. (savingsbonds.gov)
The lawyer can ask the job poster questions about the job before submitting a bid. (lawsitesblog.com)
It also requires a very knowledgeable staff to keep track of bids and help potential buyers submit bids that keep them in the winning position. (rliland.com)