how to connect dcu with storefront it gives error after running this npm install -g ?

Summary:

I have downloaded dcu from my cx env and extracted in file also and open in visual studio after that i have run this command to install dcu in vs npm install -g it says error i don't know whats the problem? i dont know whats the problem

Content (required):

can anyone explain the process to connect with dcu?

Version (include the version you are using, if applicable):

22c

Code Snippet (add any code snippets that support your topic, if applicable):