Hi @Rochelle36
Hmmm, it certainly doesn't look great!
Magnolias have quite fibrous roots, so need a deep-ish, well composted and cool soil. Your poor specimen is in a pot that's barely big enough for it, in what looks like it could be quite a hot spot near your house, so it is no wonder it isn't too happy!
While it is not the best time of year for repotting, I think it is essential that you do something now, or you will lose the shrub completely.
Start by either planting it into a well prepared, compost-rich and shaded soil or transplant into a much larger container (a half wine barrel sized pot would be ideal), using a premium quality potting mix formulated for acid loving plants like gardenias, azaleas and roses. Magnolias enjoy similar conditions.
A new potting mix will include a slow release fertiliser so no more will be needed for about 3-4 months but if you plant it into the garden, make sure you add a slow release fertiliser for acid lovers. Try not to disturb the root ball too much when you take it out of the existing pot.
Regardless of what you do, or when, this shrub needs moisture and cool soil around its roots so move it to a more protected spot on your property as soon as possible, then decide what you want to do.
A seaweed solution given as per label directions every 10-14 days may help it build some strength - it's going to need it.
