Meta tags showing without seperator

I’m not sure where you want to do this. More detailed information and a link would have been helpful. I’m guessing you mean a posts’s tag list on your site’s front end. A tag list in the front end is typically managed by your theme. I suggest asking through your theme’s dedicated support channel for suggestions.

It shows in bottom on blog post ??

https://ibb.co/WHWGBnv

Remove the spaces so all the terms run together, making them difficult to read? That’s unusual, but if you want to do so it’s possible. The solution depends on your theme. You need to find which template is responsible for this output. The template may or may not make a call similar to:
the_tags(__('Tags:','theme_text_domain'), ' ', '');
The next to last string is the separator. Make it an empty string to remove spaces, or any other separator string you might prefer.

If you cannot easily determine the template, try a plugin like Template Debugger.

If your theme does not call the_tags(), you should seek additional help through your theme’s dedicated support channel.

I’m talking about spaces and commas, I want to separate meta tags

What my theme shows: Mokes?iai VokietijojeMokes?i? deklaravimas VokietijojeMokes?i? gr??inimas i? Vokietijos?eimos deklaracija

What i wanna to show: Mokes?iai Vokietijoje,?Mokes?i? deklaravimas Vokietijoje,?Mokes?i? gr??inimas i? Vokietijos,??eimos deklaracija

If you understand, I want to separate meta tags with commas because now they are connected ??

Then add a comma to the next to last string, for example:

the_tags(__('Tags:','theme_text_domain'), ', ', '');
//added comma here ------------------------^

Assuming your theme makes a call like this.