In doubt I always check key sequences in gvim as it avoids side effects from the terminal.
What I observe is that it does the same thing as
<c-right> and it seems to go the beginning of the next word, as with
If when you type
:map + CTRL-V + CTRL+Shift+Right, it doesn't show
:map <C-S-Right>, then you'll have to play (or struggle...) with your terminal configuration. I won't be able to help more on this topic as I gave up the fight: I've been using gvim for two 2 decades now, mainly for this reason.
You should be able to find several Q/A and resources here, on SO, and in vim mailing lists...