A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi Jonathan,
For SharePoint Online, the 5000 item List View Threshold limit can't be changed.
To work around the limit, we can do the following actions:
Index and filter
Using folders to organize
Using Document center site
Synced and offline data
You may refer to the following articles for the details:
Manage large lists and libraries in SharePoint
Manage large lists and libraries in Office 365
If you get any issue when performing those actions, please post a new thread in this forum and we will try our best to assist you.
Regards,
James