If you have something to copy to the clipboard and paste into vim, you can use "+p .
+ is quoteplus, which means CLIPBOARD documented choice of X :help quoteplus for more information.
If you want to copy something in vim to the clipboard and paste the contents to another location Ctrl+v , you can do "+yy , this will copy the current line to the clipboard.
Additional information about the vim register:
:help registers :help quotestar
srain source share