bbPress.org

Let’s try it here with code and codes

Here is the tag code : https://bbpress.org/forums/topic-tag/code/ <-That works perfectly
Here is the tag codes : https://bbpress.org/forums/topic-tag/code/ <-That works perfectly
Here is the search code : https://bbpress.org/forums/search/code/ <-That works perfectly
Here is the search codes : https://bbpress.org/forums/search/codes/ <-That works perfectly

is there a way to set up so all the tags appear on a page? e.g. Tags Page? Thanks.

You would need to start modifying your bbPress templates, have a read of some of the docs on the codex that @Robin-W has pointed out to you already.