@shahroznadeem09
Alhamdolillah you all r safe after this fire.
I think it happened due to poor wiring issue.
In my suggestion, transport your car to Karachi & build ur car here.
There are several factors in burnt cases:Might be your remaining car gets useless as high temperature(due to heat) might cause Metal weakness or other rubber parts got affected too.
1st get your car fully serviced & then post complete pictures from all sides e.g. side condition, bottom condition then we can guide u better.
I think u can restore it in maximum 1 Lac(Old burnt parts you could sell it in Karachi Shershah market). Also get your car oven baked paint