The term "dhatu roop" refers to the conjugation of a verb in Sanskrit, but "bhū" is considered an anudhāt", a root that is not directly conjugated. It's used as a base for forming other verbs:
* bhū + suffix = verb
For example:
* bhū + tve = bhavati (he/she becomes)
* bhū + syat = bhavishyati (he/she will become)
Instead of conjugating "bhū" directly, we use its conjugated forms, such as "bhavati," "bhavisyati," etc. These conjugated forms are the "dhatu roop" for verbs based on "bhū".
If you're looking for the conjugations of a specific verb based on "bhū," you can specify the verb and the tense, and I can help you find its "dhatu roop."