That's to fill out something or to fill something out – to put the information onto the document, paper, or form.

那就是填写一些东西或填写一些东西——将信息放在文件、纸张或表格上。

She never permitted Boris's guardian to interfere in her business, took no heed of documents, papers, or deeds, but carried on the affairs of the estate according to the practice of its former owners.

她从不允许鲍里斯的监护人干涉她的生意，不理会任何文件、文书或契约，而是按照前任所有者的惯例处理庄园事务。