At the game a player brought up the subject of fuel.... I checked the rulebook... Nothing.. How do you as players deal with fuel?

I ignore fuel whenever possible. I pretty much just assume that the ship gets refueled whenever it is in a landing bay, and my players have never taken such a long journey that I felt like they were in danger of running out.

Fuel is basically covered as a part of a given ship’s consumables.

I prefer the idea that it takes some money to keep a spaceship flying, so I use simplified rules for fuel and routine maintenance from the old WEG system. We don't spend a lot of time on it and it's not bank-breaking, but it keeps their slush fund from getting too big too quickly.

I run it with fuel included in docking bay charges (which costs actual tracked credits)

I charge my group 50-200 credit in each spaceport, depending on location. Sometimes I insert a scene with some greasy administrator, otherwise it's done. Don't have to go into every detail, just enough to not lose immersion.

In the Compiled Resources sticky thread (which is totally worth reviewing: https://community.fantasyflightgames.com/topic/85616-compiled-resources-list/ ) there is an Operational Costs PDF, nicely done if you want to track these things:

https://drive.google.com/file/d/0B-cK7UE7hkkcTzJocVowQnJwRkk/view

Personally I don't like to track it, and prefer the Rebels approach: fuel isn't an issue, until suddenly it really is an issue (inserted via Despair, lots of Threat, or something in the plot), and the next session(s) revolves around it.

I don't bother tracking fuel, but it does feel like an oversight on FFG's part to not include something about fuel in any of the books.

While fuel is a major plot point of The Last Jedi , it's the narrative game equivalent of rolling two Despair dice on a complete failure. Fiddly game stats like fuel and ammo tracking aren't typically a focus of narrative games as, unless they add some interesting challenges to, they bog down the pace of the game. Edge of the Empire is a bit more money focused than the other two lines but even then the money should be in service to the narrative - i.e. owing a crime boss a debt and paying it back, else the bounty hunters are unleashed.

Unless something genuinely interesting happens on the trip between Point A and Point B, don't worry about the trip.