Should be Malus spp.

Yeah it looks like an apple. Possibly an old crabapple, but more like regular apple

...pruned improperly.

if you want a crop ... you will probably get there faster.. by planting a new more vigorous tree .. as very old apple trees can be a PIA to rejuvenate into a vigorous tree ...

if you are interested in a new tree... i suggest the fruit forum ...

or here in MI ... visiting a local orchard on a NOT busy day .. and quizzing them about what grows in your area ... my local orchard actually sells excess trees in spring.. left over from their planting scheme ... they are always replacing older trees ...

ken