Question

What do the Supreme Court and High Courts do for the enforcement of Fundamental Rights?

Answer 1

The Article 226 empowers High Courts to issue directions, orders or writs.

Answer 2

They issue writs like Mandamus and Quo Warranto. Some are:
Habeas Corpus, against illegal detention
Mandamus, or we order
Quo warranto, to check how a person obtained his post
etc.
Check the internet for more writs and their description
Hope this helps