Hi @Mahir_Msawil, welcome to the forum.
Are you able to install delve outside VSCode? That is, does the following command succeed:
go install github.com/go-delve/delve/cmd/dlv@latest
If this works, then there is perhaps something wrong with the VSCode setup.
Do other Go tools install fine thorugh VSCode?
What command do you use to trigger Delve installation in VSCode?