Hey!
This new feature just launched. Via the menu → Edit profile, you can now set your collection to public and get a sharable link. This link you can share with friends, post on reddit, X, etc. Anyone clicking the link can view the collection (but not edit anything!).
If you want to see how it looks, this is my public collection page: https://tcgpocketcollectiontracker.com/#/collection/0298285743526180
Happy sharing!