To circle a button, Textbox, and image control in PowerApps, you can use the following steps,
Step 1. Select the control that you want to circle by clicking on it.
Step 2. In the "Properties" pane on the right side of the screen, scroll down to the "Styles" section and click on the "Border" property.
Step 3. In the "Border" section, click on the drop-down menu next to "Style" and select "Solid" or "Dashed" to choose the type of border you want.
Step 4. Use the "Thickness" slider to adjust the width of the border.
Step 5. Use the "Color" picker to select the color of the border.
Step 6. Scroll down to the "Advanced" section and click on the "Border Radius" property.
Step 7. Use the "Top left", "Top right", "Bottom left", and "Bottom right" sliders to adjust the amount of rounding on each corner of the control.
Step 8. Adjust the other properties of the control as desired, such as the "Fill" color or the "Text" property.
Step 9. Preview the app to see the changes you've made.
Step 10. By following these steps, you should be able to circle a button, Textbox, and image control in PowerApps. Note that the specific steps may vary slightly
Step 11. depending on the type of control you are using and the version of PowerApps you are using.