You can't officially work until you are 15 and with a work permit from parents or legal guardian. You can officially work when you are 16. The only jobs you can really do is something like mowing people's lawns or babysitting or washing dishes or helping someone move and pack and unpack or something. Mostly freelance things. Just ask others if they would like anything done and charge between $5 - $20 depending on how much you think the job is worth.
You can apply for any job you wish, getting the job is a different story. There are Federal & state laws that need to be complied with, & at 14 you're limited to manual labor type jobs. You'll be better off working under the table, lawn work, gutters, landscaping, helping folks change from "summer to winter mode" You can bus tables, wash dishes, stock shelves etc.