There are two ways to put the trademark R in the upper right corner:

Open a worksheet in Word, place the cursor where you want to insert the trademark letters, and open Sogou input method. Right-click on the input method and select "Symbol Collection" from the lower-level menu of "Symbol Emoticon". After the "Symbol Collection" dialog box pops up, select "Special Symbols" in the list on the left, pull down the slider on the right to the middle position, find the registered trademark letter "", and click it with the mouse to insert it into the specified position.

Open a worksheet in Excel, click the Insert Symbol button in the toolbar, switch to the Special Symbols tab in the Symbols panel, find the registered trademark r symbol, and click to insert it into the worksheet. Check the font format settings and check the superscript option.

Follow the above steps and the trademark R can be placed in the upper right corner.