How can i active translate files?

i find translate file of theshop theme. i have two file. they are .Po and .Mo …
Bu i look languages folder of theshop theme. there are one file called theshop.
how can i active two translate files ?

Thank you so much…

Hi,

Please read WP Docs about how to translate a theme: https://make.wordpress.org/polyglots/handbook/

Best Regards,
Csaba

Thank you so much. but i dont translate. there are 2 translate docs already.

Thank you

i can not Csaba it. Please give small information.

i can not in wp-config.php the words - Wplang ‘xxx’ - and i can not add new languages docs name.
and i can not active. help please