Your question is not very clear and I am not a English native speaker
If you want to delete your raws ( for me a very bad idea but It is your choice .. ),
you can use , in the libray module ,the filter bar ( shorcut $ ) then choose file type ,
be aware that if you like in my example put Sunday on the left you will see only the files of the this particular day ( and be sure to have also in the catalog menu all photos selected )).
With this method you can delete only the raws ....
You can also copy export every jpg/raw to a new location , in export module choose original and LIghtroom will export an original version of your file
the third solution is to select all the files you want to backup and export them as a catalog .
You will have in the exported catalog the files + the metadata in .lrcat file ...
The fourth is to force lightroom to write .xmp with your files and copy the files and the xmp