There are many opportunities but the most mundane is to freelance for some quick work for pay. This takes two time slots and can be done once a day. The basic pay for this is 100 credits for this work. This requires a skill check versus Average difficulty, success on this roll nets 100 credits, a failure earns 50 credits for shoddy work. Each additional success increases this pay by 25 credits and each Advantage increases the total by 10 credit. Threat reduces the total by 10 credits and a Despair means you did so terrible you don't get paid at all. Triumph doubles the pay for excellent work.
Another way to make money is try your hand at Huttball, they pay 75 credits for amateurs and 150 credits total if you win, this includes the 75 credits. Playing Huttball can be done once per time slot. You cannot do freelance work and Huttball at the same time. If you are in Hyperspace then you are not doing side work for anyone.