The other day I stole from walmart and it was razors , well when I went to the front this guy and lady with a clip board jumped out in front of me and said we caught you stealing , and they said they had cameras watching me in the area that I stole from , and I kept saying I didn't and they guy let me go and said have a nice day , what is going to happen ? I'm really scared

They may match the video up to you and get a warrant out for your arrest, police come to your door or police come to your job.
After that, most likely they just let you go, will have your photo on the watch list in the store, hoping to catch you with more next time