"尽量收集进来" can be translated into English as "try to gather as much as possible" or "make every effort to collect everything (you can)".
Here are some contextual examples:
Try to gather as much relevant information as possible for the project.
(尽量为这个项目收集尽可能多的相关信息。)
Make every effort to collect all the data we need for the analysis.
(尽量收集我们分析所需的所有数据。)