Hi Nish,
Select on _SYS_BIC should be given to your user id, not to _SYS_REPO. Grantor is _SYS_REPO what we see there. Try running this
GRANT SELECT ON SCHEMA _SYS_BIC TO P1941689034TRIAL WITH GRANT OPTION;
I hope you are running the SQL/adding privileges with SYSTEM user id, not yours.
Regards
Chandu.