Use the Rules module to create a Rules Component, which includes whatever Rules Conditions you might need (if any), and with a Rules Action to Grant user points, to the user specified as a parameter for this Rules Component.
For an example of a Rules Action to grant user points, refer to the rule included in the answer to "How to grant User Points to viewing user when user has viewed content?".
Create a view of the group of users for which those fields should be added. Then transform that view into a view that uses Views Bulk Operations, and use the technique documented in "How to use Rules to create a custom bulk operation for a VBO view?". In doing so, you'll then be able to use the Rules Component from Step 1.
To get the idea, have a look at the video about Using Rules components with VBO" which uses a Rules Component with (only) 1 parameter. If you want even more, then also watch the subsequent "Using Rules components with more than one parameter" video.
Attention: to process like 100.000 entities at once is quite a challenge (memory requirements, etc). Therefor you might want to also watch the video about "More details about VBO settings" ... Before you are tempted to use VBO for processing them all at once ...