This is the 9281st most frequent Russian word.
ставьте
The Russian word "ставьте" means "put" or "place" (imperative, formal/plural).
In this sentence, 'ставьте' is used as a verb imperative form directed at 'you' (plural or formal singular) to instruct placing an item somewhere.
Ставьте стакан на стол.
Put the glass on the table.
Here, 'ставьте' encourages the action of marking likes on content, a common phrase in digital media.
Ставьте лайки под видео!
Leave likes under the video!
In this usage, 'ставьте' figuratively means to inform or notify (e.g., keeping someone posted).