It feels like I have small cuts on my gum on my bottom mouth, and it burns abit, what can this be? Feels like a pimple on my tongue as well

Oh so many things. Your problem may be allergic, traumatic (from improper oral hygiene), traumatic (from a sharp object), from viral, bacterial, or fungal infection, dentures in need of adjustment, smoking/vaping, etc, chemical or heat burn, etc. Please see your Dentist for an examination, differential diagnosis, and appropriate treatment plan.
See dentist. This could be a number of things possible allergy, viral, trauma, and other causes. The only way to know for sure is to, have a dentist look at your mouth. Call today.