At your Reach, one Curse affecting a Target or object ends.

If the object is a cursed Magic item, its Curse remains, but the Spell breaks its owner's attunement to the object so it can be removed or discarded. However, this is also up to the dicression of the GM to determine the power of the Curse, then the required upcast might be required.

Most Curses can be more powerful. With a successful Identify, or knowledge roll Magic, the Curse can be identified.

Thus requiring the Caster to upcast using Mana equal to, this is: Curse Spell level + 1.

This also requires a similar roll to Dispel Magic, and Counterspell, using the Spell Attack Roll of the decurser vs. the DC of the curser spellcasting, meeting or beating the DC is required to remove the Curse.

There might be also certain prerequisites written in the Curse description, or GM discretion, to be met before before this Spell to work, otherwise this Spell fails.

You feel the creature's torment, a malevolent enchantment ensnaring it. Diagnosing a curse, you delicately reach into the magical tapestry, coaxing the threads apart. Initial resistance yields to your meticulous manipulation, and with a decisive pull, you unravel the curse, extracting it from the suffering entity.

I Cast Remove Curse
Malignant whispers assail me as I craft my protective shield. The curse's voices amplify, but my incantation crescendos, a radiant purple crown enveloping me. "Begone!" I command, drowning the malevolence in a surge of power. Touching my target, I sense the curse retreat, its malice diminished.