3rd molar is plunging into the 2nd molar. Extraction should be done. If you are suffering from pain, swelling or similar issue. It is an emergency to get it done.
If there are no issues right now, like food lodgement, mild pain on biting then you can wait for some time.
Next Steps
after every meal follow a oral hygiene routine - do plain brushing after breakfast, do mouthwash after lunch and brush with paste after dinner.
Health Tips
as precautionary measure, apply hexigel over the 3rd molar area 2-3 times a day.