bellend is sore when dry and foreskin only comes back a litt

Is there a question in here somewhere?

I assume that you're asking what this red line is that runs under your glans and keeps the foreskin from retracting.

This is diagrammed with photos on wikipedia under circumcision.
The term for the connective strip, that appears to be too tight for you, is frenulum.

You can try looking that up as well.

But ultimately, if you decide to do anything about this minor problem, you'll need to see a urologist. He specializes in variations and problems of the genitals and urinary tract.

Good luck.

You are blessed with an erogenous, highly-innervated foreskin. Many unforeskinned guys would envy your foreskin. You display great wisdom in wanting to avoid circumcision. Do not be worried.
The attachment you see is called the frenulum. It is normal and supposed to be there. The frenulum is highly innervated and serves to limit the retraction of the foreskin.
The stretching of the frenulum during sex helps to trigger orgasm.
Be careful not to pull your foreskin back too forcefully or you may tear your frenulum.

If you think your frenulum is too short, then you may stretch it to make your foreskin go back more.

Search the Internet for:

“How to Fix Phimosis and Tight Foreskins, Solutions That Work”

and you will find the help you need.