I want to remove everyone from shared permission on all non-default shares

Hi,

See if this works for you

$servers = "server1","server2","server3"  
Invoke-Command -ComputerName $servers -ScriptBlock{Get-SmbShare | Where-Object {$_.Name  -notmatch ".+\$"} | Get-SmbShareAccess | Where-Object {$_.AccountName -eq "Everyone"} | ForEach-Object {  
    Revoke-SmbShareAccess -name $_.name -AccountName $_.AccountName -Force}  
}  

Best Regards，
Ian

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