Once you've generated tracking links with Sub IDs and/or a Shared ID, you can view reporting on them in the Performance by Sub ID and Advanced Action Listing reports.
From the top navigation bar, select Reports → All Reports.
Under Performance, select Performance by Sub ID.
Alternatively, under Listing, select Advanced Action Listing.
if you choose to run the Advanced Action Listing report, utilize the Sub ID and/or Shared ID filters at the top to view performance data related to those parameters.