tar joint between garage wall and asphalt
While the asphalt-base (tar) crack filler would probably work, it is also sticky and messy and will probably end up being ugly against your stucco/plaster wall.

I recommend a self-leveling flexible urethane filler, often sold as "concrete crack filler".

Either way, you will need to sweep out that crack as well as you can, then blast it clean with a stream of water from a hose, then let it dry thoroughly. Take your time when applying so you get a clean, nice looking, even bead.