To view a list of default, current, and runtime configuration parameter values for a particular RepAgent, log in to Adaptive Server and execute sp_config_rep_agent without options.
sp_config_rep_agent pubs2
If you do not specify a database name, sp_config_rep_agent displays configuration values for all RepAgent-enabled databases.
sp_config_rep_agent pubs2, 'scan batch size'
See Replication Server Reference Manual > Adaptive Server Commands and System Procedures > sp_config_rep_agent.