in org mode table. I have a cell with many words, and and to append more words to the end. But how to quick move to the end of current cell?
org-forward-sentence is bound to
M-e. When inside a table, it will jump to the end of the current field (calling
org-table-end-of-field as @JeanPierre noted in his answer).
All table related keybindings are listed in the manual.