Hi Punita,
Thanks for reaching out.
Would you mind providing the URL that has this issue? It’s because the texts are displayed upon load as I checked with Pagespeed Insight, that’s about 1-second loading speed. The fonts are also implemented as how Google recommend it, in fact, it uses Google fonts. Though, it’s not specific to which text isn’t displayed at all. Perhaps it’s referring to the loading or speed gap between fall-back font switches to web-font upon rendering and the fix for that is caching the fonts so the browser doesn’t need to re-download it saving loading time. But it should be already cached since fonts are served by Google itself.

With that as the fonts aren’t served by your site, there is no way you can directly control it. I recommend ignoring for that now and focus on other areas needs the optimization. Like, render blocking and minification.
Thanks!