Asalam alaikum warahma
tullahi wabarakatuh.

قال رسول الله صلى الله عليه و سلم،  من فا تته  العصر  فكأنما و تز أ ھله و ماله.

The messenger of Allah said,  whoever misses Asr prayer, it's  as he has lost his family and wealth.

           (saheeh bukhari,  3602)

  Asr is one of the bardein ( colds)  prayers  and Allah said whoever prays the bardein (the two cold)  prayers, fajr and Asr will enter jannah(paradise)

'Asalatuh ala waqtiha' (  every salah has its punctuality)  and its upon as to observe the time.

Let not delay any prayer not asr only but every prayer should be prayed on time.

Just to avoid missing them,  I know shaitan is everywhere telling us to just relax for few minutes 'it's okay you can pray later' and later never comes!

Whenever you hear the adhan ( calling prayer) stop whatever you are doing, go and pray.  That may prevent you from delaying your prayer and most probably missing it.

May Allah accept our prayers, ameen.
May Allah accept our raku,(bowing) ameen.
May Allah accept our sujud, (prostration) ameen.

Asalam alaikum.