Is there a way to limit forms answers

I plan on using forms -block for online registrations. However the number of registration must be limited depending on the activity. Is there a way to limit forms block answers? Thank you 

if not how can i circle around this 

There isn't a way to do this with Squarespace forms. The form don't feedback into anywhere on the website that could be used to monitor and then proactively disable the form. Your best bet is just to monitor submissions manually, or find an external solution that could do this.