Is that possible to export entity information of model such as name, length, width and height to excel as a table?
Yes. You can use the Reoprt Generator to do that.
Is that an extension??
You can also export it to Trimble Connect and there is a table with dimensions in the viewer.
No, it’s a native option.
well no, it’s part of the dynamic component extension. weird, I know.
as long as you have it turned on, it should be in the File menu, at the bottom.
however, if you’re indeed on SU 20, I think it might be a webtool and not supported anymore.