Quiero exportar como png la grilla.

If Premiere Pro, see here:

https://helpx.adobe.com/premiere/desktop/render-and-export/export-files/export-a-still-image.html

Thank you for your post, ​@LUZ16lc.

Which Adobe software or service are you trying to export the visible grid from?

This forum is to discuss payments, not program functions

Start here https://community.adobe.com/community to find the correct forum for your question
Make a small change in your question title so you don't receive a forum error