Early Primitive Elvish
vḷřḷ
root. VḶŘḶ
vḷðḷ
root. *worth, value
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
The unglossed root ᴱ√VḶŘḶ [VḶÐḶ] appeared in the Qenya Lexicon of the 1910s with derivatives like ᴱQ. valda “worth; worthy, dear” and ᴱQ. vildi- “it matters, is of significance, worth, moment” (QL/102). In the contemporaneous Gnomish Lexicon the primitive form was given as vḷd with derivatives like G. bâl “worthy, important; great, mighty” (GL/21, 23). ᴱN. balt “might” from the 1920s could be related (PE13/138). I think it is worth positing a Neo-Root ᴺ√BALAD “worth, value” as an elaboration on √BAL to serve as the basis for words having to do with worth, value and significance.