my power apps portal forever has /js/jquery-3.0.0.min.js, how can i delete this file?
The following link is one of the example.
If you are talking about Power Apps Portal jquery is shipped by default with it and we cannot control the version that is shipped with it. For now, version 126.96.36.199 is the latest version of jquery that is on Portal (https://support.microsoft.com/en-us/topic/power-apps-portals-version-9-2-10-x-release-f3e149cb-ab23-...). You can add a reference to a newer version, but you might have a collision problem in that case.
Check out new user group experience and if you are a leader please create your group
Did you know that you can visit the Power Query Forum in Power BI and now Power Apps
Participate in the Power Virtual Agents Community Challenge
Power Platform release plan for the 2021 release wave 2 describes all new features releasing from October 2021 through March 2022.