Google crawls 24/7, so as long as you aren't relying on SEO it's fine. Google doesn't want to send traffic to servers with frequent 500 errors. Edit: there is

Google crawls 24/7, so as long as you aren't relying on SEO it's fine. Google doesn't want to send traffic to servers with frequent 500 errors. Edit: there is also more to be said about this. I'd research crawl-budget if you're interested.