Can I sue if I was attacked at a store and the clerk on camera can be seen not doing anything like calling the police?

I do not understand where the assault occurred, as you say there was damage to your car [so parking lot] and attacked "at the store". I also do not understand how you have video as the store certainly would not release it to you. Thirty hits is an extremely high number, and I am unsure if the average person could physically do that. Did you fight back? Are you sure you are not exaggerating? Whom ever took the video also did not come to your rescue. If the assault occurred in the parking lot the store definitely has no liability. Inside the store, likely the clerk still did not have a duty to act.