“他们之间不再会有什么友谊”：在这个句子里"会“贡献什么意思？
消除“会”导致消除将来友谊的可能性。


Yes, your understanding is correct. 会 in the context refers to the future tense. Removed 会,  他们之间不再有什么友谊 doesn't specify the tense and we'd have to rely on context to determine whether it happens in the past, present or future.