How to use api with html page created somewhere else

im trying to use backendless js api on a html page created without backendless.
when i upload the index files into the page folder and replace the one already in it it seems to screw up every time additionally i initialize backendless js api on html page then it seems to not work im trying to get current user data anD insert current user data field “score” value into a const or var.

Hi @joe_joe

What kind of errors do you see?