It’s always good to do some research before asking.
How to get help on the Dynamo forums - FAQ - Dynamo (dynamobim.com)
I’d suggest starting with the Dynamo Primer and working through that to get comfortable with all the fundamentals. Then you can come back and search the forum for similar topics. There are plenty dealing with data transfer to excel. If you run into any specific issues you can ask them here and we can get you sorted out.