There are a couple of ways to do this - the first is to append
?tab=favorites to you main profile page to give e.g.
https://quantumcomputing.stackexchange.com/users/23/mithrandir24601?tab=favorites for mine,
https://quantumcomputing.stackexchange.com/users/9006/martin-vesely?tab=favorites for yours or
https://[sitename][.meta].stackexchange.com/users/[usernumber]/[username]?tab=favorites in general.
Alternatively, to navigate there manually using the mouse, from the activity (/main/front page) of your profile, go to the second 'block' of tabs from the top and the 6th tab from the left is your favourites.
In pictures, that is:
Clicking on your profile near the top right of the screen:
Leads you to this page:
(Note that the 'activity' tab, circled in red has been selected.)
Then click the favourites tab, about a quarter of the way down, in the (horizontal) middle: