ORA-02030: Can Only Select From Fixed Tables/Views

SQL> grant select on v$session to test;
grant select on v$session to test
*
ERROR at line 1:
ORA-02030: can only select from fixed tables/views

You just need to replace v$ with v_$ i.e it should be v_$session.

SQL> grant select on v_$session to test;

Grant succeeded.