Hundreds. Thousands. Probably not more than a few hundred million
If we could sync memories, I could do everything at once. I could do anything each day. I could learn everything, I could do everything. My sense of self is flexible enough to see my clones as me... In fact I've had existential breakdowns over only having the one body. We'd be a single person from day one, hell my morality is based on "if the world was made up of only copies of me, would it be a better place".
I'd start with a dozen, then scale up as I get more jobs (I could handle 12x my food bill for a while, I mostly eat beans and rice already). I'd rotate between jobs and time the memory syncs to give myself work-life balance.
Of it's naruto style, I would make a 100 of me, have them all find jobs for a year or two, then collapse them all back and never have to work again aince I now saved for 100+ years.
I would actually take a very different route as a contrast to others on this thread:
I would clone some 20-30 mes and do a speedrun together to gather enough funds to buy a farm, and live out the rest of my life in a commune dream with others like me 🥹
Eventually there’d be other people joining in and I could release more and more of the clones as we gather enough saved up and finish the mortgage and all.
So eventually we’d find something of a balance at around 2-4 clones with which we’d just arrange a rotating system of guaranteeing 3 weeks of free time each between a week of work 😌
either 2 or 3 (including the original) but no more. and we would always be together, would avoid being separated as much as possible. always in sync. I don't want a clone to send off to do chores. I want a clone to be with me to help me do chores.