@Dinesh Talekar,
Please take a reference of below JSON code:
{
"$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
"elmType": "div",
"txtContent": "=if(getMonth(@currentField)==0, 'Jan', if(getMonth(@currentField)==1, 'Feb', if(getMonth(@currentField)==2, 'Mar', if(getMonth(@currentField)==3, 'Apr', if(getMonth(@currentField)==4, 'May', if(getMonth(@currentField)==5, 'Jun', if(getMonth(@currentField)==6, 'Jul', if(getMonth(@currentField)==7, 'Aug', if(getMonth(@currentField)==8, 'Sep', if(getMonth(@currentField)==9, 'Oct', if(getMonth(@currentField)==10, 'Nov', 'Dec')))))))))))+ ' '+getDate(@currentField)+','+ getYear(@currentField)",
"style": {
"color": "#ff0000"
}
}
Test Result:

BR