Hi @jrdn03 ,
Here is a quick overview on the steps. If something is not clear enough or not actually solves your problem, let me know and I will be glad to try to clarify it. Also, feel free to bring more additional context or share some images from your flow and app.
Running a flow from Power Apps
If you want to run a flow from a Canvas App, you first need to create your flow with a When a Power Apps Call a Flow trigger:

If needed, you can add inputs to the trigger, which will be passed in the Canvas App to Power Automate:

After saving the flow, go to your App and click in the Power Automate icon in the left-side menu (highlighted in yellow), and choose your flow in Add flow. Only flows with a trigger activable by a Power App will be displayed in the list (highlighted in green):

In the same menu item, you can see the list of added flows in your app:

After that, you can now call your flow from a button, by setting the OnSelect property as [flow_name].Run():

The flow flow parameters must be included inside the parenthesis of Run(), .
If you followed all these steps when adding the flow to your app, it must be working properly 🙂
Filter query in SharePoint
The filter query follows a syntax of [column_name] [operator] [value]. The column_name will be the logical name of your SharePoint column; the operator is the comparison criteria that you want to use (equals, not equals, greater than, lower or equal...), and the value is the data that you want use to filter the Get Items outputs.
You can pass dynamic contents in the Filter query, so from your end, the query would look like something similar to this (I had to surround the dynamic content with single quotes, as this is a string column):

By the way, I'm using the following List as example, and the flow is intended to return all records which Department is equal to HR:

After clicking in the button in the Power App, my flow ran successfully, and I got my results filtered by Department = HR:

Finally, I recently wrote an article about how to work with Filter query in Power Automate, which can be helpful for you in understanding this topic: http://digitalmill.net/2024/06/21/working-with-filter-query-in-power-automate/
Let me know if it works for you or if you need any additional help!
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