6-10 hours / week.
newbie / alpha skills
Pick one of those.
See, High-sec is crowded and is the minimum-reward area. You’re looking at 40-60 hours if you want to accumulate high-sec rewards to achieve 1.6 billion ISK in one month.
6-10 hours / week is possible, but only if you have access to the kinds of ships that are required to survive in 0.0 or high-difficulty wormholes and do the TOUGH high-end complexes.
Alpha skills limit what ships you can fly, and basically you can’t specialize enough, really, to achieve the ISK/hr that’s required. Alpha skills also limit your industry and your market trading, severely.
So, as the other post above suggested, the only real ways are to somehow involve RL cash. You can use 3-5 “skill farm” accounts to generate enough skillpoints to pay for those accounts and 1 more (your main, player account), but that requires a bit of subscription or PLEX paid to set everything up with the first 5 million skillpoints.
Or you can just straight up pay for a single subscription using whatever discounts CCP offers, or pay approx 2.5 that cost to buy PLEX to get your account going.
Or, of course, you can “get lucky” and scam 5000 PLEX’es off someone, or 50 trillion ISK, or steal all their corp assets worth trillions. If you get lucky.