How to add the value of User Input to value of in A Cell???

Hi everybody,

So I have been trying to make this vba excel sheet for keep track of my expenses and it works pretty well but, I am stuck on an aspect of my code. I'm trying to take the data that the user (my wife) from a text box and then add that value to a value in a cell. I know how to add cells when just using the excel sheet but I don't know how to write the code to do this from a textbox. Any help would be greatly appreciated! Thank You.
I would insert image but, for some reason it won't let me??

Originally Posted by protonLeah

Please don't post pictures of worksheets. Anyone who wants to help is then forced to create their own version.
When you are in Advanced reply, click on the paperclip to open the upload window.

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I wasn't trying to force anyone to have to create their own worksheet I was just trying to give a visual to help me explain. Seems irrelevant now since I have not received any help on this issue.