Hi @Del-Dev
I'm assuming you already know how to submit the form. For detail, I'm adding the following steps:
1. On the button, write the code `SubmitForm(YourFormName); Navigate(Screen1)`. Replace `YourFormName` with the name of your form and `Screen1` with the screen where you want to show the submitted items.
2. Use a gallery on `Screen1`. This could be a blank vertical gallery.
3. Then add a list or table which is connected to your submitting form as a data source.
4. Add a label and use `ThisItem.ColumnName` in the label. Replace `ColumnName` with the name of the column you want to display.
I assume from your question that you're new to Power Platform. So, in order to understand better, try to create an app from a table or SharePoint from the Power Platform portal. It will automatically create an app with basic form and gallery, edit, submit, and delete features. You will have a lot of understanding of how Power Apps can be built and later you can customize according to your need.
Please replace the placeholders with your actual form names, screen names, and column names. If this helps, please consider it as a solution! 😊