You can get the Polls data on “bp_polls” of BuddyPress/BuddyBoss “activity” Rest API. The “bp_polls” key enables you to get the poll data ( admin options and submitted polls ).
{ "user_id": 1, "component": "activity", "content": { "rendered": "" }, "date": "2023-04-26T05:52:41", "date_gmt": "2023-04-26T05:52:41", "id": 797, "link": "http://buddypress.local/activity/p/797/", "primary_item_id": 0, "secondary_item_id": 0, "status": "published", "title": "admin created a poll", "type": "activity_poll", "favorited": false, "user_avatar": { "full": "http://buddypress.local/wp-content/uploads/avatars/1/1663828147-bpfull.jpg", "thumb": "http://buddypress.local/wp-content/uploads/avatars/1/1663828147-bpthumb.jpg" }, "bp_polls": { "bpolls_meta": { "poll_option": { "good": "Good", "better": "Better", "cool": "Cool" }, "multiselect": "no", "user_additional_option": "no", "user_hide_results": "no", "close_date": 0, "bpolls_thankyou_feedback": "", "poll_optn_votes": { "good": 2, "better": 1, "cool": 2 }, "poll_total_votes": 5, "poll_optn_user_votes": { "good": [ 1, 10 ], "better": [ 19 ], "cool": [ 16, 8 ] }, "poll_users": [ 19, 16, 1, 8, 10 ] }, "bpolls_total_votes": "5" }, "_links": { "self": [ { "href": "http://buddypress.local/wp-json/buddypress/v1/activity/797" } ], "collection": [ { "href": "http://buddypress.local/wp-json/buddypress/v1/activity/" } ], "user": [ { "embeddable": true, "href": "http://buddypress.local/wp-json/buddypress/v1/members/1" } ] } }