Not for free. But I would be willing to pay a fee just to be on the MLS.
Do the course.
Pass the test.
Pay your license fee and MLS fees
Find a sponsoring brokerage.
Get on the MLS.
For your information, there is information on that listing service that sellers don't want to be available to "one time users".
For a "one time fee" anyone would be able to obtain information about a seller(s) at will.
Subscription to an MLS comes with legal and fiduciary reponsibilities "one time users" couldn't be held to.