That is a compiled xml, binary file, so it cannot be opened and edited directly.

You need to decompile the apk. You can use apktool to decompile. You will get the smali source code of the program and the related xml configuration file. At this time, the xml can be edited with a text editor. Edit Use apktool to repackage it into a new apk file, and then use the auto-sign tool to sign the apk before it can be used.

Please search Baidu for details on how to use apktool.