We go to store fridays. English second language or language?

This sentence is grammatically correct, but it's a bit informal. Here's a breakdown:

* "We go to store Fridays" - This implies you regularly go to the store every Friday.

* "Fridays" is used as a shorthand for "every Friday".

Here are some more formal ways to say the same thing:

* We go to the store on Fridays. (This is the most natural way to say it.)

* We shop at the store every Friday.

* We visit the store each Friday.

The choice of which sentence to use depends on the context and the level of formality you want to convey.