I have downloaded methylation data from GEO server in bigWig format and the files are namely

-rw-rw-r-- 1 dk1187 foran 261M Aug  3 03:52 index.html?acc=GSM5652380&format=file&file=GSM5652380_Small-int-Epithelial-Z000000UW.hg38.bigwig
-rw-rw-r-- 1 dk1187 foran 256M Aug  3 03:52 index.html?acc=GSM5652381&format=file&file=GSM5652381_Small-int-Epithelial-Z000000UY.hg38.bigwig

But I’m wondering how can I change the name of the files to

GSM5652380_Small-int-Epithelial-Z000000UW.hg38.bigwig and 
GSM5652381_Small-int-Epithelial-Z000000UY.hg38.bigwig

when I’m trying to cp in a different name it shows

 cp index.html?acc=GSM5652381&format=file&file=GSM5652381_Small-int-Epithelial-Z000000UY.hg38.bigwig GSM5652381_Small-int-Epithelial-Z000000UY.hg38.bigwig
[1] 41541
[2] 41542
-bash: GSM5652381_Small-int-Epithelial-Z000000UY.hg38.bigwig: command not found
[2]+  Done                    format=file
$ cp: missing destination file operand after ‘index.html?acc=GSM5652381’
Try 'cp --help' for more information.

[1]+  Exit 1                  cp index.html?acc=GSM5652381

and the same issue with mv option.
It would be really appreciated if someone kindly advised me to resolve this issue.

I’ve also tried with the full path of the destination file name but no improvement.