Take a look at the bottom of the FAQ, it covers Running your own Relay:
Can I earn tokens for running a relay node?
- Not at this time, but there will be opportunities to earn tokens for relay node running in the future. While anyone can run a relay node, the Algorand Foundation has given early supporters around the world who agreed to run relay nodes at network launch the opportunity to earn Algos in exchange. This early support program is closed, but there will be more opportunities in the future.