You can see the number of delegations to your validator with the following command:
./psc --node="https://api.posichain.org" blockchain delegation by-validator 0x589577117AE579D977c9f63Cac1828e20D4e24da
{
"id": "0",
"jsonrpc": "2.0",
"result": [
{
"Undelegations": [],
"amount": 93000000000000000000,
"delegator_address": "0xC50c6F17293dDdfc8776144E91CfA617E7114e6C",
"reward": 193348691324709180000,
"validator_address": "0x589577117AE579D977c9f63Cac1828e20D4e24da"
},
{
"Undelegations": [],
"amount": 1.01e+22,
"delegator_address": "0xba67D5D89d0D641b548DF2D40e11CCA3E550986b",
"reward": 646413329184000700000,
"validator_address": "0x589577117AE579D977c9f63Cac1828e20D4e24da"
}
]
}