Hello.
See..... best is to check the tooth clinically as well as radiographically (X-ray) and then a decision should be given. Still, as per pic I feel that u require a treatment even if there is no cavity. This yellow part is showing that ur tooth is hypocalcified (weak) so it shd be treated.
All d best, god bless u.
Next Steps
To visit some good dentist.
Health Tips
Don't allow the food to remain there.