Looking for solution for this space below door frame.

[OsaE]

Solutions for this cavity against the wall below door frame. Looks like previous had new flooring installed. The threshold going outside is fine.

 

[foxhole]

Uvpc trim.

 

[big-all]

is there any signs off damp or discolouration assuming its wood??

 

[OsaE]

is there any signs off damp or discolouration assuming its wood??

There's no signs of this

 

[big-all]

as it may get well bashed and possibly dirty i would go for upvc trim as well as its hard wearing and wipe clean maybe chamfered or round nose if less than 10mm step under door frame