if you only wants to modify the text i suggest to use translations: https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/translations/xlate.html
translations are not used only for translating to another language, but also to modify the text in a given language.
you can use/create a translation file in a custom module, for example:
or the translation file from your theme:
You can find the translation key inside of
__(..) in your template, which in your case is
Creating an account has many benefits: check out faster, keep more than one address, track orders and more.. Adding the following line to a translation file, will modify the output
"Creating an account has many benefits: check out faster, keep more than one address, track orders and more.","New label to create an account"
Still if you need to modify the template, the best is to override it into a child template: https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/templates/template-override.html
for example to override
copy it into
for both approaches you need to clear the cache to see the result.