"Store of value" is not how economists (and most normal people) define money. Pretty much any non-degrading asset can be a store of value. That doesn't make them money.
To be money, something must fulfill three criteria: 1) be a medium of exchange, 2) be a store of value and 3) act as a unit of account. It helps if the something is also fungible, easily divisible, etc.
Missing the forest for the trees. Those three functions of money are the “cliff notes” description of money, but there is a deeper abstraction that all of those properties can be derived from: money is a ledger. In the case of cash or bitcoin, the ledger has a constraint that negative balances are not allowed.
To be money, something must fulfill three criteria: 1) be a medium of exchange, 2) be a store of value and 3) act as a unit of account. It helps if the something is also fungible, easily divisible, etc.