Convert Set Analysis into Scripting

[Sharad02]

Hello Team ,

Can anyone suggest backend Scripting for the further Set analysis 

count(distinct {<Release_Date_Process_RPA = {"<=$(=Date(vRPAToDate, 'D.M.YYYY 23:59:59'))"}
,Decommission_Date_Process_RPA = {">$(=Date(vRPAToDate - 90, 'D.M.YYYY 0:00:00'))"}>}

Script_RPA)