My script

//version=5
indicator("Volume in Crores", overlay=false)

vol_crores = volume / 1e7

plot(vol_crores, title="Volume (Cr)", style=plot.style_columns, color=color.new(color.blue, 0))

showLabels = input.bool(true, title="Show Volume Labels")
labelOffset = input.int(1, title="Label Offset (bars)")
if showLabels and bar_index % 5 == 0
label.new(x=bar_index - labelOffset, y=vol_crores, text=str.tostring(vol_crores, "#.##") + " Cr", style=label.style_label_up, size=size.small, color=color.white, textcolor=color.black)