It had little in common with the socialist democracies of Europe, nothing in common with the communist proscriptions of Marx, and some in common with the much maligned state capitalism of today's China.
We'd be better off brainstorming a new, 21st century solution to the excess of capitalism, rather than relying on the industrial past.
That sounds like something a socialist would say:
https://www.currentaffairs.org/2018/03/socialism-as-a-set-of...
The USSR, as a matter of fact, operated under mostly capitalist conditions, capitalism distinguished by:
* The predominance of wage labour in the economy
* The goal of economic activity as the accumulation of capital
* Private ownership of means of production (this is the "mostly" part - the USSR did not have much private ownership, which sets it apart from other capitalisms, but Marx was careful to point out that even under simple "public ownership", society becomes a "general capitalist")
In short: if there is wage labour, it is most definitely not "Communist". Money in its function as money in the circuit of capital, that is, C-M-C', remains money, not merely a symbolic "voucher". Socialists have proposed the idea of non-exchangable labour vouchers, but this is a far cry from real money which was what the USSR had. The ruble was just as much money as the dollar.
This is, in some ways different from economic activity for the purpose of making more money (Which, in addition to producing things like television, automobiles, bombs, and tanks, also ends up producing things like advertising.)
Also, that value was different for different people. I.e., if you were an average citizen, you could spend on bread, maybe meat, and vodka. Once a year you might get a "zakaz" (literally, it means an order, as in mail-order, but in practice a way of distributing some scarce goods to people deemed worthy; you'd still have to pay for it, of course) with maybe a piece of imported salami or a can of pineapple. If you were, say, a driver for Central Committee member, you could get into a different store, which at least had all the staples all the time. And if you were a Central Committee member, you would just shop in a store that had some pretty nice stuff, at a prices that werre set in 1930s and haven't changed since then. Obviously, your ruble would go much further in that case.