It is not possible with the product standard.
If you want to share and use scripts, you may be able to do so by creating your own action items.
For more information, please refer to the following document:
* intra-mart Accel Platform IM-BloomMaker Programming Guide
4. Creating element action item
https://document.intra-mart.jp/library/bloommaker/public/im_bloommaker_programming_guide/texts/create_items/index.html#link-create-items
The action items you create can be placed and used in the action editor.
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iAP/Accel Extensions/IM-BloomMaker for Accel Platform/2020 Spring or later
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FAQID:1438
Is it possible for a custom script defined in the IM-BloomMaker screen (content) to be shared and executed in other contents?