In reply to Prawin kumar:
This is what the Refernce Manual says:
Defines standard verbosity levels for reports.
UVM_NONE Report is always printed. Verbosity level setting can not disable it.
UVM_LOW Report is issued if configured verbosity is set to UVM_LOW or above.
UVM_MEDIUM Report is issued if configured verbosity is set to UVM_MEDIUM or above.
UVM_HIGH Report is issued if configured verbosity is set to UVM_HIGH or above.
UVM_FULL Report is issued if configured verbosity is set to UVM_FULL or above.
You should learn fo work with this Refermce Manual and the UVM Cookbook.