I think it's about Looks, Personality and Financial Substance/Money, without any particular order. You want to be at least a 6 or 7 in each one to be considered "solidly attractive" but the majority of chicks you approach.
Looks includes working out and being cut, but it also is about your smile, your style of dress, your cologne, etc.
Personality is all about being sociable, able to spark up an interesting convo with anybody (not just women), being able to lead a woman into "sex talk" through normal conversation, never being "dull" in terms of being around, being funny, etc.
Financial Substance is having your shyt together and being at least in the middle class, that could be the lower middle class or higher middle class. So with this you should have some type of actual Career rather than random jobs, some type of higher education completion or a certification, etc. You should also stay in a decent place, drive a decent car, and have some money in the bank.
Being a 6 or 7 in each of these makes you attractive, which means "your product" is all set. Now go sell your product to the market. If you approach in person, you should get 40% of the women you approach to exchange numbers, then of the number pile you should end up dating/fvcking about 20% of them, then from your dating/fvck pile, you can pick how you want to proceed which is a short term relationship or some type of long term relationship.
So let's say in a month you approach 50 chicks. That should get you 20 number exchanges. You end up dating/fvckin 4 of them, which means you have 4 plates you are now spinning. You can choose to keep spinning the plates or get into a relationship with one of them and keep the others on the side.