hi

1-is there any free component or plugin for add a googlemap spot for k2 item

hotspots component can do this but in comersial pack:
Plugin to show a hotspot in an Article, K2 item

2- this is so good if it own a module that we can show all spots in one google map

is there any component or plugin?

can i use these? :
extensions.joomla.org/extensions/maps-a-weather/maps-a-locations/maps/8590

extensions.joomla.org/extensions/maps-a-weather/maps-a-locations/maps/22162

or i have to use some one support k2?

Hello teddy,

You need to use an extension that supports K2. You can look for a plugin in the extend K2 section of this site.