Dear Sajjad Hossain Shozib

These links could be interesting for you:

https://www.riversnetwork.org/rbo/index.php/river-blogs/central-asia/itemlist/category/102-indus

or

https://www.hydrosheds.org/products

I hope this helps you.

Thank you very much for your cooperation.

Or you can use Open Street Map data: https://overpass-turbo.eu/

HydroSHEDS is another good option- easy download of basins and sub-basins in .shp format

https://www.hydrosheds.org/products/hydrosheds

HydroSHEDS

https://www.hydrosheds.org/products/hydrobasins

First Delineate Indes river based on outlet points, then extport this watershed in the form of shapfile

https://rds.icimod.org/Home/Index