What LVGL version are you using?
7.9
Since tileviews are derived from pages, you can use page APIs on them. As such, lv_page_set_scrollbar_mode(tileview, LV_SCROLLBAR_MODE_OFF); should work.
Thanks,it’s worked!
by the way,why don’t creat the “lv_tileview_set_scrlbar_mode” function?
My guess is that no one has wanted to change the tileview scrollbar mode before. 
It would just be a wrapper which calls lv_page_set_scrollbar_mode with the same flags. If you want to send a PR with that, I’d happily merge it.