anjanesh one way is download the entire site with wget and then upload those files to a static app, eg:
wget \
--mirror \
--page-requisites \
--html-extension \
--convert-links \
https://domain.com/
I think there are also many different WP plugins that can do the conversion for you, but I've never tried them. Search the WP plugin repository to see if one of them will meet your needs.