Hi EugeniaBG,
Thank you for reaching out Microsoft Community and for checking with us if it's possible to install R Studio on the Surface Pro X.
Well, as long as this program or application can run in an ARM based device, then you can install it on the Surface Pro X but if in case the current application only has the regular x64 bit and it's not being compiled on an ARM processor, then this cannot be installed because the Surface Pro X will not install 64-bit applications that have not been ported to ARM64 and that applies to all the programs or applications you are to download on the device. It would be best to check the program's system requirement or to contact the application developer to ask if they were able to develop this program under ARM64.
If this answers your question, please let our Community know by marking this post as an answer. Otherwise, don't hesitate to respond to this thread if you need further assistance.
Kind Regards,
Crest_Z