Short answer
HubSpot's KB: use the Analyze tab to review post performance. Reports only show the past year. Externally published posts can take up to a day to appear; TikTok 24 to 48 hours. Boosted posts and ad campaigns aren't included, only organic data.
1. The tabs
The social tool in my demo portal.

2. Externally published
You can choose to include posts published outside HubSpot when connecting accounts.