I had modified the Code Snip as below, Placed a ScrollViewer inside the SplitView.Pane and Modified the Margin values.
Code for Windows 10 PC App
<splitview borderbrush="White" borderthickness="1" x:name="windowssplit1" displaymode="Overlay" margin="310,95,0,100" x:fieldmodifier="Public" grid.rowspan="2" xmlns:x="#unknown">
<splitview.pane>
<scrollviewer x:name="scrol2" isverticalrailenabled="True">
<stackpanel background="Gray" borderbrush="White" borderthickness="1">
<textblock text="All genere" margin="20,10,0,10" foreground="White" fontsize="20" />
<border borderthickness="0.4" borderbrush="White" margin="20,0,0,10" width="280" horizontalalignment="Left" />
<listview x:name="filterlist1" margin="10,-10,0,0" selectionchanged="filterlist_SelectionChanged">
<listview.itemtemplate>
<datatemplate>
<textblock fontsize="18" margin="0,5,0,0" foreground="White" text="{Binding CategoryName}" />
</datatemplate>
</listview.itemtemplate>
</listview>
</stackpanel>
</scrollviewer>
</splitview.pane>
</splitview>
Code for Windows 10 Phone App
<splitview x:name="PhoneSplitView" margin="0,50,0,0" displaymode="Overlay" width="250" scrollviewer.verticalscrollmode="Enabled" scrollviewer.isverticalrailenabled="True" horizontalalignment="Left" x:fieldmodifier="Public" grid.columnspan="2" grid.rowspan="2" xmlns:x="#unknown">
<splitview.pane>
<scrollviewer x:name="scrol1" isverticalrailenabled="True">
<stackpanel background="Gray" scrollviewer.verticalscrollmode="Enabled">
<border borderthickness="0.4" x:name="border3" borderbrush="White" margin="10,10,0,0" width="280" horizontalalignment="Left" />
<textblock x:name="langlist2" text="Language" margin="10,15,0,0" foreground="White" fontsize="13" fontweight="Light" />
<listview x:name="langlist" height="Auto" width="Auto" selectionchanged="langlist1_SelectionChanged">
<listview.itemtemplate>
<datatemplate>
<textblock foreground="White" text="{Binding SortName}" />
</datatemplate>
</listview.itemtemplate>
</listview>
<textblock text="Refine" x:name="refine" margin="10,0,0,10" foreground="White" />
<border borderthickness="0.4" x:name="border1" borderbrush="White" margin="10,0,0,0" width="200" horizontalalignment="Left" />
<textblock text="Sort By :" margin="10,15,0,0" foreground="White" fontsize="13" fontweight="Light" />
<listview x:name="sortbylist" selectionchanged="sortbylist_SelectionChanged" scrollviewer.isverticalrailenabled="True" scrollviewer.verticalscrollmode="Enabled" height="Auto" width="Auto">
<listview.itemtemplate>
<datatemplate>
<textblock foreground="White" x:name="dsasd" text="{Binding SortName}" />
</datatemplate>
</listview.itemtemplate>
</listview>
<border borderthickness="0.4" x:name="border2" borderbrush="White" margin="10,10,0,0" width="200" horizontalalignment="Left" />
<textblock text="Filter :" margin="10,15,0,0" x:name="refine1" foreground="White" fontsize="13" fontweight="Light" />
<listview x:name="filterlist" selectionchanged="filterlist_SelectionChanged" scrollviewer.isverticalrailenabled="True" scrollviewer.verticalscrollmode="Enabled" height="Auto" width="Auto">
<listview.itemtemplate>
<datatemplate>
<textblock foreground="White" text="{Binding CategoryName}" />
</datatemplate>
</listview.itemtemplate>
</listview>
</stackpanel>
</scrollviewer>
</splitview.pane>
</splitview>
This accomplished my work, and all the lists in Splitview are scrolling.