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This is a very good question. An optimal location of shear walls in a high rise building depends on its architectural features that dictate the mass distribution of the structure as well as the lateral force resisting system of the structure. As a structural engineer, you will have to try different locations considering that optimal location will be one that shall result in centre of rigidity of structure being closet to centre of mass. This is the general principle.

I would just add that in choosing suitable locations for structural walls, the following additional aspects should be considered: 1. Locate the walls at the perimeter or periphery of the building to get the best torsional resistance. 2. Locate your walls so that they carry as much gravity load to the foundations as possible. This would reduce uplift forces in the foundation and also would reduce flexural reinforcement demand in the wall. Thanks.

foundation design by Bowles or Braja M.Das

yepp agreed with @Ayesha its depends on your layout and architectural work, but the best way to do it is place the shear wall on the place closest to centre of mass this already proved by some journals on internet as a kind of optimum place to put the shear wall on, but the internal forces of shear wall would have a bigger result cause it tends to withstand more mass you should try several numbers of model to pick which one the best in reducing structural displacement and withstand internal forces.